Wikipedia:Vital articles/Level 5/Biology and health sciences/Animals

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Vital articles is a list of subjects for which Wikipedia should have corresponding high-quality articles. It serves as a centralized watchlist to track the status of Wikipedia's most essential articles. This is one of the sub-lists of the fifty thousand article Vital articles/Level 5 and is currently under construction.

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Quota 2,450 articles.

Total 2,459 articles.

Class	#Articles
FA	178
GA	283
B	497
C	807
LIST	4
FFA	20
DGA	18
Start	652
Stub	38

Animals

This section contains 2459 articles.

General classifications

This section contains 5 articles.

1. Aquatic animal
2. Ediacaran biota
3. Invertebrate (Level 4)
4. Megafauna
5. Worm

Animal breeds and hybrids

This section contains 126 articles.

Cats

This section contains 23 articles.

1. Abyssinian cat
2. American Shorthair
3. Balinese cat
4. Birman
5. Burmese cat
6. Cornish Rex
7. Devon Rex
8. Moggy
9. Exotic Shorthair
10. Himalayan cat
11. Maine Coon
12. Manx cat
13. Oriental Shorthair
14. Persian cat
15. Ragdoll
16. Ragamuffin cat
17. Russian Blue
18. Siamese cat (Level 4)
19. Somali cat
20. Sphynx cat
21. Tabby cat
22. Tonkinese cat
23. Turkish Angora

Cattle

This section contains 17 articles.

1. Aberdeen Angus
2. American Brahman (Level 4)
3. Charolais cattle
4. Chianina
5. Corriente
6. Guernsey cattle
7. Hereford cattle (Level 4)
8. Highland cattle
9. Holstein Friesian (Level 4)
10. Limousin cattle
11. Jersey cattle
12. Simmental cattle
13. Spanish Fighting Bull
14. Texas Longhorn

Miniature cattle

This section contains 3 articles.

1. Australian Lowline
2. Dexter cattle
3. Vechur cattle

Chickens

This section contains 5 articles.

1. Australorp
2. Leghorn chicken
3. Plymouth Rock chicken
4. Rhode Island Red
5. Silkie

Dogs

This section contains 38 articles.

1. Free-ranging dog
   1. African village dog
   2. Pye-dog
2. Gun dog (Level 4)
   1. Pointing dog
   2. Retriever
      1. Golden Retriever
   3. Setter
   4. Spaniel
   5. Water dog
      1. Poodle
3. Herding dog (Level 4)
   1. Collie
   2. German Shepherd
4. Hound (Level 4)
   1. Scent hound
      1. Basset
      2. Bloodhound
      3. Coonhound
      4. Foxhound
   2. Sighthound
      1. Greyhound
5. Livestock guardian dog
6. Mastiff (Level 4)
   1. Bulldog type
      1. French Bulldog
7. Mongrel
   1. Dog crossbreed
8. Spitz (Level 4)
   1. Chow Chow
   2. Husky
   3. Laika (dog type)
9. Terrier (Level 4)
   1. Bull and terrier
   2. Fox Terrier
10. Toy dog
    1. Bichon
    2. Chihuahua (dog breed)

Donkeys

This section contains 3 articles.

1. Amiatina
2. Baudet du Poitou
3. Âne Corse

Goats

This section contains 4 articles.

1. Angora goat
2. Alpine goat
3. Cashmere goat
4. Nigerian Dwarf

Horses

This section contains 11 articles.

1. Arabian horse (Level 4)
2. Andalusian horse (Level 4)
3. Appaloosa
4. Clydesdale horse
5. Friesian horse (Level 4)
6. Lipizzan
7. Miniature horse
8. Palomino
9. Pony (Level 4)
   1. Shetland pony
10. Thoroughbred (Level 4)

Hybrids

This section contains 7 articles.

1. Canid hybrid
2. Hinny
3. Mule (Level 4)
4. Panthera hybrid
5. Sheep–goat hybrid
6. Ursid hybrid
7. Zebroid

Pigeons

This section contains 3 articles.

1. Domestic pigeon
   1. Fancy pigeon
   2. Homing pigeon

Pigs

This section contains 3 articles.

1. Berkshire pig
2. Black Iberian pig
3. Vietnamese Pot-bellied

Rabbits

This section contains 5 articles.

1. Angora rabbit
2. Chinchilla rabbit
3. Dwarf rabbit
4. Flemish Giant rabbit
5. Rex rabbit

Sheep

This section contains 5 articles.

1. Jacob sheep
2. Leicester Longwool
3. Merino (Level 4)
4. Rambouillet sheep
5. Romney sheep

Turkeys

This section contains 2 articles.

1. Broad Breasted White
2. Norfolk Black

Individual animals

This section contains 13 articles.

1. Balto
2. Bucephalus
3. Dolly (sheep)
4. Hachikō
5. Jumbo
6. Koko (gorilla)
7. Laika
8. Lonesome George
9. Phar Lap
10. Rin Tin Tin
11. Seabiscuit
12. Secretariat (horse)
13. Sue (dinosaur)

Vertebrates

This section contains 1757 articles.

General classifications

This section contains 6 articles.

1. Vertebrate (Level 3)
2. Gnathostomata (Level 4)
3. Tetrapod (Level 4)
   1. Evolution of tetrapods
4. Amniote
5. Archosaur

Mammals

This section contains 663 articles.

Mammals: General

This section contains 23 articles.

1. Mammal (Level 3)
   1. Evolution of mammals
2. Astrapotheria
3. Colugo
4. Hyaenodonta
   1. Hyaenodon
5. Litopterna
   1. Macrauchenia
6. Marine mammal
7. Mesonychia
   1. Mesonychidae
8. Notoungulata
   1. Toxodon
9. Oxyaenidae
10. Pangolin (Level 4)
11. Pantodonta
    1. Coryphodon
12. Placentalia
13. Saber-toothed predator
14. Taeniodonta
15. Treeshrew
16. Uintatherium
17. Ungulate

Bats

This section contains 10 articles.

1. Bat (Level 4)
2. Megabat (Level 4)
   1. Pteropus (Level 4)
      1. Indian flying fox
3. Microbat (Level 4)
   1. Bulldog bat
   2. Honduran white bat
   3. Horseshoe bat
   4. Vampire bat (Level 4)
   5. Vespertilionidae

Eulipotyphla

This section contains 10 articles.

1. Erinaceidae
   1. Hedgehog (Level 4)
      1. Domesticated hedgehog
   2. Moonrat
2. Mole (animal) (Level 4)
   1. Desman
   2. Eastern mole
   3. Star-nosed mole
3. Shrew (Level 4)
4. Solenodon

Lagomorphs

This section contains 9 articles.

1. Lagomorpha (Level 4)
2. Hare (Level 4)
   1. Antelope jackrabbit
   2. European hare
   3. Snowshoe hare
3. Pika
4. Rabbit (Level 4)
   1. Cottontail rabbit
   2. European rabbit

Perissodactyla

This section contains 39 articles.

1. Perissodactyla (Level 4)
2. Brontotheriidae
   1. Megacerops
3. Chalicotheriidae
   1. Chalicotherium
4. Lophiodon
5. Palaeotheriidae
   1. Palaeotherium
6. Tapir (Level 4)
   1. Malayan tapir

Rhinocerotoidea

This section contains 11 articles.

1. Rhinocerotoidea
2. Paraceratherium
3. Rhinoceros (Level 4)
   1. Elasmotherium
   2. Black rhinoceros
   3. Indian rhinoceros
   4. Javan rhinoceros
   5. Sumatran rhinoceros
   6. White rhinoceros
   7. Teleoceras
   8. Woolly rhinoceros

Equidae

This section contains 18 articles.

1. Equidae (Level 4)
2. Evolution of the horse
   1. Eohippus
3. Donkey (Level 4)
   1. African wild ass
   2. Kiang
   3. Onager
4. Hipparionini
   1. Hipparion
5. Horse (Level 3)
   1. Feral horse
   2. Przewalski's horse
   3. Tarpan
6. Zebra (Level 4)
   1. Grévy's zebra
   2. Mountain zebra
   3. Plains zebra
      1. Quagga

Carnivora

This section contains 149 articles.

Carnivora: General

This section contains 1 article.

1. Carnivora (Level 4)

Bears

This section contains 14 articles.

1. Bear (Level 4)
2. American black bear
3. Arctodus
4. Asian black bear
5. Brown bear (Level 4)
   1. Eurasian brown bear
   2. Grizzly bear
   3. Kodiak bear
6. Cave bear
7. Giant panda (Level 4)
8. Polar bear (Level 4)
9. Sloth bear
10. Spectacled bear
11. Sun bear

Canidae

This section contains 34 articles.

1. Canidae (Level 4)
2. Caninae
3. African wild dog
4. African wolf
5. Bat-eared fox
6. Bush dog
7. Canis
   1. Coyote (Level 4)
   2. Coywolf
   3. Dingo (Level 4)
   4. Dog (Level 3)
      1. Puppy
   5. Ethiopian wolf
   6. Golden jackal
   7. Red wolf
   8. Wolf (Level 4)
8. Wolfdog
9. Dhole
10. Dire wolf
11. Falkland Islands wolf
12. Fox (Level 4)
    1. Crab-eating fox
    2. Gray fox
    3. Vulpes
       1. Arctic fox
       2. Fennec fox
       3. Red fox
13. Jackal (Level 4)
    1. Black-backed jackal
    2. Side-striped jackal
14. Maned wolf
15. Nyctereutes
16. Short-eared dog
17. South American fox

Felidae

This section contains 35 articles.

1. Felidae (Level 4)
2. Cat (Level 3)
   1. Kitten
   2. Feral cat
   3. Wildcat
3. Caracal
4. Cheetah (Level 4)
5. Cougar (Level 4)
6. Fishing cat
7. Lynx (Level 4)
   1. Bobcat
8. Ocelot
9. Pallas's cat
10. Rusty-spotted cat
11. Serval
12. Neofelis
    1. Clouded leopard
    2. Sunda clouded leopard
13. Panthera
    1. American lion
    2. Jaguar (Level 4)
    3. Leopard (Level 4)
    4. Lion (Level 4)
       1. Asiatic lion
       2. Barbary lion
    5. Panthera spelaea
    6. Snow leopard (Level 4)
    7. Tiger (Level 4)
       1. Bengal tiger
       2. White tiger
       3. Caspian tiger
       4. Siberian tiger
       5. Sumatran tiger
14. Machairodontinae
    1. Dinofelis
    2. Smilodon

Mustelidae

This section contains 25 articles.

1. Mustelidae (Level 4)
2. Badger
   1. American badger
   2. European badger (Level 4)
   3. Honey badger (Level 4)
3. Ferret-badger
4. Ictonychinae
5. Marten (Level 4)
   1. Beech marten
   2. Sable
   3. Yellow-throated marten
6. Megalictis
7. Neogale
   1. American mink
   2. Long-tailed weasel
8. Otter (Level 4)
   1. Giant otter
   2. Sea otter (Level 4)
   3. Smooth-coated otter
9. Weasel (Level 4)
   1. European mink
   2. European polecat
      1. Ferret
   3. Stoat (Level 4)
10. Wolverine (Level 4)

Pinnipeds

This section contains 9 articles.

1. Pinniped (Level 4)
2. Earless seal (Level 4)
   1. Harbor seal
   2. Leopard seal
   3. Elephant seal
3. Eared seal (Level 4)
   1. Fur seal
   2. Sea lion
4. Walrus (Level 4)

Procyonidae

This section contains 7 articles.

1. Procyonidae (Level 4)
2. Bassaricyon
3. Cacomistle
4. Coati
5. Kinkajou
6. Raccoon
7. Ringtail

Other carnivora

This section contains 24 articles.

1. African palm civet
2. Ailuridae
   1. Red panda
3. Amphicyonidae
   1. Amphicyon
4. Asiatic linsang
5. Borophagus
6. Eupleridae
   1. Fossa (animal)
7. Hyena (Level 4)
   1. Aardwolf
   2. Cave hyena
8. Mephitidae
   1. Skunk (Level 4)
      1. Spotted skunk
9. Mongoose (Level 4)
   1. Egyptian mongoose
   2. Meerkat
10. Nimravidae
11. Viverridae
    1. African civet
    2. Banded palm civet
    3. Binturong
    4. Genet (animal)

Artiodactyla

This section contains 152 articles.

1. Artiodactyla (Level 4)
2. Ruminant (Level 4)

Bovidae

This section contains 45 articles.

1. Bovidae (Level 4)
2. African buffalo (Level 4)
3. Antelope (Level 4)
   1. Addax
   2. Blackbuck
   3. Dik-dik
   4. Duiker
   5. Gazelle (Level 4)
   6. Gerenuk
   7. Greater kudu
   8. Impala (Level 4)
   9. Oryx
      1. Arabian oryx
   10. Saiga antelope
   11. Springbok
   12. Wildebeest (Level 4)
4. Aurochs (Level 4)
5. Banteng
6. Capra (genus) (Level 4)
   1. Alpine ibex
   2. Goat (Level 4)
   3. Markhor
   4. Mountain goat
   5. Wild goat
7. Cattle (Level 3)
   1. Bull
   2. Zebu
8. Chamois
9. Gaur (Level 4)
10. Muskox (Level 4)
11. Serow
12. Sheep (Level 3)
    1. Barbary sheep
    2. Bighorn sheep
    3. Dall sheep
13. Tahr
14. Takin
15. Water buffalo (Level 4)
    1. Wild water buffalo
16. Yak (Level 4)
    1. Wild yak
17. Bison
    1. Steppe bison
    2. American bison (Level 4)
    3. European bison (Level 4)

Camelidae

This section contains 10 articles.

1. Aepycamelus
2. Alpaca (Level 4)
3. Guanaco (Level 4)
4. Llama (Level 4)
5. Vicuña (Level 4)
6. Camel (Level 4)
   1. Bactrian camel (Level 4)
      1. Wild Bactrian camel
   2. Dromedary (Level 4)
      1. Australian feral camel

Deer

This section contains 16 articles.

1. Deer (Level 4)
2. Cervalces
3. Chital
4. Elk (Level 4)
5. European fallow deer
6. Irish elk
7. Moose (Level 4)
8. Muntjac
9. Père David's deer
10. Pudu
11. Red deer (Level 4)
12. Reindeer (Level 4)
13. Roe deer
14. Sika deer
15. Water deer
16. White-tailed deer

Giraffidae

This section contains 9 articles.

1. Giraffidae
2. Giraffe (Level 4)
   1. Masai giraffe
   2. Northern giraffe
   3. Reticulated giraffe
   4. Southern giraffe
3. Okapi
4. Prolibytherium
5. Sivatherium

Pigs

This section contains 8 articles.

1. Suidae
2. Sus (genus)
   1. Bornean bearded pig
   2. Pig (Level 3)
   3. Wild boar (Level 4)
3. Babirusa
4. Warthog
5. Red river hog

Other artiodactyla

This section contains 20 articles.

1. Andrewsarchus
2. Anoplotheriidae
   1. Anoplotherium
3. Antilocapridae
   1. Pronghorn (Level 4)
4. Anthracotheriidae
   1. Anthracotherium
5. Cainotheriidae
6. Chevrotain
   1. Dorcatherium
7. Entelodontidae
   1. Daeodon
8. Hippopotamus (Level 4)
   1. Pygmy hippopotamus
9. Merycoidodontoidea
10. Moschidae
    1. Musk deer
11. Palaeomerycidae
12. Peccary (Level 4)
13. Protoceratidae

Cetaceans

This section contains 42 articles.

1. Cetacean (Level 4)
2. Whale (Level 4)
3. Evolution of cetaceans
   1. Ambulocetus
   2. Basilosaurus
   3. Dorudon
   4. Livyatan
   5. Odobenocetops
   6. Remingtonocetidae

Baleen whales

This section contains 9 articles.

1. Baleen whale
2. Blue whale (Level 4)
3. Bowhead whale
4. Fin whale
5. Gray whale
6. Humpback whale (Level 4)
7. Minke whale
8. Right whale
   1. Southern right whale

Toothed whale

This section contains 24 articles.

1. Toothed whale
2. Beaked whale
   1. Mesoplodon
3. Beluga whale
4. Dolphin (Level 4)
5. Oceanic dolphin
   1. Bottlenose dolphin
   2. False killer whale
   3. Orca (Level 4)
   4. Pilot whale
   5. Hector's dolphin
   6. Right whale dolphin
   7. Risso's dolphin
6. River dolphin
   1. Baiji
   2. Amazon river dolphin
7. Narwhal
8. Porpoise (Level 4)
   1. Dall's porpoise
   2. Finless porpoise
   3. Harbour porpoise
   4. Vaquita
9. Sperm whale (Level 4)
   1. Pygmy sperm whale

Primates

This section contains 122 articles.

1. Primate (Level 3)
2. Monkey (Level 4)

Apes

This section contains 22 articles.

1. Ape (Level 4)
   1. Dryopithecus
   2. Gigantopithecus
   3. Hominidae
      1. Homininae
   4. Proconsul (mammal)
2. Gibbon (Level 4)
   1. Lar gibbon
   2. Siamang
3. Gorilla (Level 4)
   1. Cross River gorilla
   2. Eastern lowland gorilla
   3. Mountain gorilla
   4. Western lowland gorilla
4. Orangutan (Level 4)
   1. Bornean orangutan
   2. Sumatran orangutan
5. Pan (genus)
   1. Chimpanzee (Level 4)
   2. Bonobo (Level 4)
6. Sivapithecus
7. Human (Level 1)

New World monkeys

This section contains 11 articles.

1. New World monkey (Level 4)
2. Capuchin monkey (Level 4)
3. Howler monkey
4. Lion tamarin
5. Marmoset
   1. Pygmy marmoset
6. Night monkey
7. Spider monkey (Level 4)
8. Squirrel monkey
9. Tamarin
10. Uakari

Old World monkeys

This section contains 17 articles.

1. Old World monkey (Level 4)
2. Colobinae
   1. Black-and-white colobus
   2. Semnopithecus
   3. Proboscis monkey

Cercopithecinae

This section contains 12 articles.

1. Cercopithecinae
2. Baboon (Level 4)
   1. Hamadryas baboon
   2. Olive baboon
3. Chlorocebus
4. Gelada
5. Macaque (Level 4)
   1. Macaca fascicularis
   2. Japanese macaque
   3. Rhesus macaque (Level 4)
6. Mandrill
7. Mangabey

Strepsirrhini

This section contains 10 articles.

1. Strepsirrhini (Level 4)
2. Galago (Level 4)
3. Lemur (Level 4)
   1. Aye-aye
   2. Indri
   3. Ring-tailed lemur
   4. Ruffed lemur
   5. Sifaka
   6. Subfossil lemur
4. Slow loris (Level 4)

Other primates

This section contains 2 articles.

1. Purgatorius
2. Tarsier (Level 4)

Prehistoric humans

This section contains 58 articles.

Human evolution: General

This section contains 3 articles.

1. Human evolution (Level 3)
2. Hominini
3. Missing link (human evolution)

Australopithecines

This section contains 23 articles.

1. Australopithecine
2. Graecopithecus
3. Sahelanthropus
4. Orrorin
5. Australopithecus (Level 4)
   1. Australopithecus anamensis
   2. Australopithecus afarensis
      1. Lucy (hominid)
   3. Australopithecus africanus
      1. Taung Child
   4. Australopithecus bahrelghazali
   5. Australopithecus deyiremeda
   6. Australopithecus garhi
   7. Australopithecus sediba
6. Ardipithecus
   1. Ardipithecus kadabba
   2. Ardipithecus ramidus
      1. Ardi
7. Kenyanthropus
8. Paranthropus (Level 4)
   1. Paranthropus aethiopicus
   2. Paranthropus boisei
   3. Paranthropus robustus

Homo

This section contains 32 articles.

1. Homo (Level 4)
2. Homo ergaster
3. Homo floresiensis
4. Homo gautengensis
5. Homo habilis (Level 4)
6. Homo luzonensis
7. Homo rudolfensis
8. Penghu 1
9. Homo erectus (Level 4)
   1. Dmanisi hominins
   2. Java Man
   3. Lantian Man
   4. Nanjing Man
   5. Peking Man
   6. Solo Man
   7. Tautavel Man
   8. Yuanmou Man
10. Denisovan (Level 4)
11. Homo antecessor
12. Ceprano Man
13. Homo heidelbergensis
14. Homo naledi
15. Neanderthal (Level 4)
16. Homo rhodesiensis
17. Early modern human
    1. Cro-Magnon (Level 4)
    2. Herto Man
    3. Manot 1
    4. Red Deer Cave people
    5. Mitochondrial Eve
    6. Y-chromosomal Adam
18. Interbreeding between archaic and modern humans

Rodents

This section contains 53 articles.

1. Rodent (Level 3)
2. Agouti
3. Blesmol
4. Capybara (Level 4)
5. Nutria (Level 4)
6. Beaver (Level 4)
7. Chinchilla
8. Jerboa
9. Dormouse (Level 4)
10. Giant pouched rat
11. Gopher
12. Guinea pig (Level 4)
13. Hamster (Level 4)
14. Ceratogaulus
15. Kangaroo rat
16. Lemming
17. Mara (mammal)
18. Muskrat (Level 4)
19. Naked mole-rat
20. Octodon
21. Pedetes
22. Porcupine (Level 4)
    1. Old World porcupine
    2. Prehensile-tailed porcupine
23. Spalax
24. Viscacha
25. Vole

Muridae

This section contains 10 articles.

1. Muridae (Level 4)
2. Gerbillinae
3. Rat (Level 4)
   1. Black rat
   2. Brown rat (Level 4)
   3. Laboratory rat
   4. Polynesian rat
4. Mouse (Level 4)
   1. House mouse
   2. Laboratory mouse

Sciuridae

This section contains 16 articles.

1. Squirrel (Level 4)
2. Callosciurus
3. Chipmunk
4. Flying squirrel
5. Ground squirrel
   1. Groundhog
   2. Marmot (Level 4)
   3. Prairie dog
   4. Spermophilus
6. Oriental giant squirrel
7. Pine squirrel
8. Sciurus
   1. Eastern gray squirrel
   2. Red squirrel
9. Tree squirrel
10. Xerini

Afrotheria

This section contains 34 articles.

Proboscidea

This section contains 22 articles.

1. Proboscidea (Level 4)
2. Deinotheriidae
   1. Deinotherium
3. Gomphothere
   1. Anancus
4. Mammutidae
   1. Mastodon
5. Moeritherium
6. Platybelodon
7. Stegodontidae
   1. Stegodon

Elephantidae

This section contains 11 articles.

1. Elephantidae
2. Elephant (Level 4)
   1. African elephant
      1. African bush elephant
      2. African forest elephant
      3. North African elephant
   2. Asian elephant
   3. Dwarf elephant
3. Mammoth (Level 4)
   1. Columbian mammoth
   2. Woolly mammoth

Sirenia

This section contains 4 articles.

1. Sirenia (Level 4)
2. Dugong
3. Manatee
4. Steller's sea cow

Other afrotheres

This section contains 8 articles.

1. Aardvark (Level 4)
2. Arsinoitherium
3. Desmostylia
4. Sengi
5. Giant otter shrew
6. Golden mole
7. Hyrax (Level 4)
8. Tenrec

Xenarthra

This section contains 11 articles.

1. Anteater (Level 4)
   1. Giant anteater
   2. Tamandua
2. Armadillo (Level 4)
   1. Giant armadillo
   2. Glyptodon
3. Sloth (Level 4)
   1. Ground sloth
      1. Megatherium
      2. Megalonyx
   2. Two-toed sloth

Marsupials

This section contains 40 articles.

1. Marsupial (Level 4)
2. Didelphodon
3. Sparassodonta
   1. Thylacosmilus
4. Dasyuromorphia (Level 4)
   1. Numbat
   2. Quoll
   3. Dunnart
   4. Tasmanian devil (Level 4)
   5. Thylacine
5. Marsupial mole
6. Opossum (Level 4)
   1. Virginia opossum
7. Peramelemorphia (Level 4)
   1. Bandicoot
   2. Macrotis

Diprotodontia

This section contains 24 articles.

1. Diprotodontia (Level 4)
2. Macropodiformes
   1. Sthenurus
   2. Kangaroo (Level 4)
      1. Red kangaroo
      2. Eastern grey kangaroo
      3. Western grey kangaroo
   3. Wallaby
      1. Rock-wallaby
   4. Wallaroo
   5. Tree-kangaroo
   6. Potoroo
   7. Quokka
   8. Pademelon
3. Phalangeriformes
   1. Common brushtail possum
   2. Common ringtail possum
   3. Honey possum
   4. Sugar glider
4. Vombatiformes
   1. Koala (Level 4)
   2. Wombat
   3. Thylacoleo
   4. Diprotodon

Monotremes

This section contains 3 articles.

1. Monotreme (Level 4)
2. Echidna (Level 4)
3. Platypus (Level 4)

Stem-mammals

This section contains 8 articles.

1. Mammaliaformes
2. Castorocauda
3. Megazostrodon
4. Multituberculata
5. Eomaia
6. Euharamiyida
7. Eutriconodonta
   1. Repenomamus

Proto-mammals

This section contains 18 articles.

1. Synapsida (Level 4)
2. Cotylorhynchus
3. Pelycosaur
4. Dimetrodon (Level 4)
5. Edaphosaurus

Therapsida

This section contains 13 articles.

1. Therapsida
2. Burnetia
3. Cynodontia
   1. Thrinaxodon
4. Dicynodontia
   1. Lystrosaurus
   2. Placerias
5. Dinocephalia
   1. Moschops
6. Gorgonopsia
   1. Gorgonops
   2. Inostrancevia
7. Therocephalia

Birds

This section contains 389 articles.

Birds: General

This section contains 22 articles.

1. Bird (Level 3)
   1. Evolution of birds
2. Bird of prey (Level 4)
3. Fowl
4. Seabird (Level 4)
5. Bustard (Level 4)
   1. Lesser florican
6. Falcon (Level 4)
   1. Gyrfalcon
   2. Peregrine falcon (Level 4)
7. Grebe
8. Flamingo (Level 4)
9. Hoatzin (Level 4)
10. Kagu
11. Loon (Level 4)
12. Mesite
13. Mousebird
14. Sandgrouse
15. Seriema
16. Sunbittern
17. Tropicbird
18. Turaco (Level 4)

Accipitrimorphae

This section contains 25 articles.

1. Accipiter (Level 4)
2. Bearded vulture
3. Buteo
4. Crested caracara
5. Eagle (Level 4)
   1. Sea eagle
      1. Bald eagle
   2. Bateleur
   3. Golden eagle (Level 4)
   4. Haast's eagle
   5. Harpy eagle
   6. Philippine eagle
   7. Steppe eagle
   8. Wedge-tailed eagle
6. Elaninae
7. European honey buzzard
8. New World vulture (Level 4)
   1. Andean condor
   2. California condor
9. Old World vulture (Level 4)
   1. Cinereous vulture
   2. Egyptian vulture
10. Osprey (Level 4)
11. Secretarybird (Level 4)
12. Vulture

Anseriformes

This section contains 28 articles.

1. Anatidae
2. Duck (Level 4)
   1. Diving duck
   2. Domestic duck
   3. Mallard (Level 4)
   4. Mergini
      1. Eider
      2. Long-tailed duck
      3. Mergus
   5. Northern pintail
   6. Northern shoveler
3. Goose (Level 4)
   1. Anser (bird)
      1. Domestic goose
      2. Greylag goose
      3. Swan goose
      4. Snow goose
   2. Branta
      1. Canada goose
      2. Nene (bird)
4. Magpie goose
5. Moa-nalo
6. Muscovy duck
7. Screamer
8. Tadorna
9. Swan (Level 4)
   1. Black swan
10. Whistling duck

Caprimulgiformes and related

This section contains 12 articles.

1. Nightjar (Level 4)
2. Frogmouth
3. Oilbird
4. Owlet-nightjar
5. Potoo

Apodiformes

This section contains 7 articles.

1. Hummingbird (Level 4)
   1. Patagona
   2. Rufous hummingbird
2. Swift (bird) (Level 4)
   1. Common swift
   2. Swiftlet
3. Treeswift

Cavitaves

This section contains 16 articles.

1. Cuckoo-roller

Trogoniformes

This section contains 2 articles.

1. Trogon (Level 4)
2. Resplendent quetzal (Level 4)

Coraciiformes

This section contains 13 articles.

1. Bee-eater
2. Kingfisher
   1. River kingfisher (Level 4)
   2. Tree kingfisher
      1. Kookaburra
   3. Water kingfisher
3. Ground roller
4. Hornbill (Level 4)
   1. Oriental pied hornbill
   2. Ground hornbill
5. Hoopoe (Level 4)
6. Motmot
7. Tody

Piciformes

This section contains 10 articles.

1. Piciformes
2. Lybiidae
3. Megalaimidae
4. Coraciidae
5. Honeyguide (Level 4)
6. Jacamar
7. New World barbet
8. Toucan (Level 4)
   1. Toco toucan
9. Woodpecker (Level 4)

Charadriiformes

This section contains 33 articles.

1. Charadriiformes
2. Auk (Level 4)
   1. Great auk
   2. Guillemot
   3. Puffin
3. Buttonquail
4. Courser
5. Greater painted-snipe
6. Jacanidae
7. Laridae
   1. Gull (Level 4)
      1. Larus
      2. Black-headed gull
   2. Rynchops
   3. Tern (Level 4)
      1. Arctic tern
8. Lapwing
9. Oystercatcher
10. Plover
11. Pratincole
12. Sandpiper (Level 4)
    1. Curlew
    2. Dowitcher
    3. Godwit
    4. Phalarope
    5. Ruff (bird)
    6. Snipe
    7. Tringa
    8. Turnstone
13. Skua
14. Stilt
    1. Avocet
15. Stone-curlew

Columbiformes

This section contains 17 articles.

1. Columbidae (Level 4)
2. Barbary dove
3. Common wood pigeon
4. Crowned pigeon
5. Dodo (Level 4)
6. Eared dove
7. Eurasian collared dove
8. Feral pigeon
9. Fruit dove
10. Gallicolumba
11. Laughing dove
12. Mourning dove
13. Nicobar pigeon
14. Passenger pigeon (Level 4)
15. Rock dove (Level 4)
16. Spotted dove
17. Zebra dove

Cuculiformes

This section contains 8 articles.

1. Cuckoo (Level 4)
2. Ani (bird)
3. Common cuckoo
4. Coua
5. Coucal
6. Clamator
7. Koel
8. Roadrunner

Galliformes

This section contains 31 articles.

1. Galliformes (Level 4)
2. Chachalaca
3. Curassow
4. Francolin
5. Grey junglefowl
6. Grouse (Level 4)
7. Guan (bird)
8. Guinea fowl (Level 4)
9. Monal
10. Megapode
11. Partridge
12. Peafowl (Level 4)
13. Phasianidae
14. Red junglefowl
    1. Chicken (Level 3)
15. Tragopan
16. Turkey (bird)
    1. Domestic turkey (Level 4)
    2. Ocellated turkey
    3. Wild turkey
17. Pheasant
18. Blue eared pheasant
19. Common pheasant (Level 4)
20. Golden pheasant
21. Green pheasant
22. Lady Amherst's pheasant
23. Domesticated quail
24. New World quail
25. Old World quail
    1. Common quail (Level 4)
    2. King quail

Gruiformes

This section contains 13 articles.

1. Gruiformes (Level 4)
2. Crane (bird) (Level 4)
   1. Antigone (bird)
   2. Grey crowned crane
   3. Demoiselle crane
   4. Siberian crane
3. Limpkin
4. Psophia
5. Rail (bird) (Level 4)
   1. Coot
   2. Moorhen
   3. Swamphen
      1. Takahē

Palaeognathae

This section contains 10 articles.

1. Palaeognathae (Level 4)
2. Cassowary (Level 4)
3. Elephant bird
4. Emu (Level 4)
5. Kiwi (bird) (Level 4)
6. Moa (Level 4)
7. Ostrich
   1. Common ostrich (Level 4)
8. Rhea (bird) (Level 4)
9. Tinamou (Level 4)

Passerines

This section contains 86 articles.

This section contains 2 articles.

1. Passerine (Level 4)

Passeri

This section contains 79 articles.

1. Songbird (Level 4)

Corvidae

This section contains 11 articles.

1. Corvidae (Level 4)
2. Chough
3. Corvus (Level 4)
   1. American crow
   2. Common raven (Level 4)
   3. Hooded crow
   4. House crow
   5. Rook (bird)
4. Eurasian magpie (Level 4)
5. Jay
6. Western jackdaw

Passeri: others

This section contains 67 articles.

1. Bird-of-paradise (Level 4)
2. Bowerbird
3. Honeyeater (Level 4)
4. Lyrebird (Level 4)
5. Shrike (Level 4)
6. Accentor
7. Australian magpie
8. Bulbul (Level 4)
9. Cardinalidae (Level 4)
10. Dipper
11. Drongo
12. Emberiza
13. Estrildidae
    1. Java sparrow
    2. Gouldian finch
14. Finch (Level 4)
    1. Atlantic canary
       1. Domestic canary
    2. Crossbill
    3. Hawaiian honeycreeper
15. Gnatcatcher
16. Icterid (Level 4)
    1. Red-winged blackbird (Level 4)
17. Kinglet
18. Lark (Level 4)
19. Locustellidae
20. Manakin
21. Mockingbird (Level 4)
    1. Northern mockingbird
22. Motacillidae
    1. Longclaw
    2. Pipit
    3. Wagtail
23. New World warbler (Level 4)
24. Nuthatch
25. Old World flycatcher (Level 4)
    1. Chat (bird)
    2. European robin (Level 4)
    3. Common nightingale (Level 4)
26. Old World oriole
27. Old World sparrow (Level 4)
    1. House sparrow (Level 4)
28. Oxpecker
29. Penduline tit
30. Old World warbler
31. Ploceidae (Level 4)
    1. Red-billed quelea
32. Starling (Level 4)
    1. Myna
       1. Common hill myna
       2. Common myna (Level 4)
    2. Common starling (Level 4)
33. Sunbird (Level 4)
34. Swallow (Level 4)
    1. Barn swallow
    2. Delichon
35. Tanager
    1. Darwin's finches
36. Tit (bird) (Level 4)
37. Thrush (bird) (Level 4)
    1. American robin (Level 4)
    2. Common blackbird
38. Vireo
39. Wallcreeper
40. Waxwing
41. White-eye
42. Wren (Level 4)

Tyranni

This section contains 6 articles.

1. Tyranni
2. Antbird (Level 4)
3. Cotinga
   1. Cock-of-the-rock
4. Ovenbird (family) (Level 4)
5. Tyrant flycatcher (Level 4)

Pelecanimorphae

This section contains 22 articles.

1. Cormorant (Level 4)
   1. European shag
2. Darter (Level 4)
3. Frigatebird (Level 4)
4. Hamerkop
5. Heron (Level 4)
   1. Bittern
   2. Cattle egret
   3. Little egret
   4. Night heron
6. Ibis (Level 4)
   1. African sacred ibis
7. Shoebill (Level 4)
8. Spoonbill
9. Pelican (Level 4)
10. Stork (Level 4)
    1. Black stork
    2. Marabou stork
    3. White stork
11. Sulidae (Level 4)
    1. Booby
    2. Gannet

Procellariiformes

This section contains 6 articles.

1. Procellariiformes (Level 4)
2. Albatross (Level 4)
3. Austral storm petrel
4. Northern storm petrel
5. Procellariidae
   1. Giant petrel

Psittaciformes

This section contains 17 articles.

1. Parrot (Level 4)
2. Cockatoo (Level 4)
   1. Cockatiel
   2. Gang-gang cockatoo
3. New Zealand parrot
   1. Kākāpō
4. True parrot
   1. Amazon parrot
   2. Budgerigar (Level 4)
   3. Grey parrot
   4. Loriini
   5. Lovebird
   6. Macaw
      1. Ara (bird) (Level 4)
   7. Parakeet
   8. Rainbow lorikeet
   9. Rosella

Sphenisciformes

This section contains 5 articles.

1. Penguin (Level 4)
   1. African penguin
   2. Emperor penguin
   3. Little penguin
   4. Crested penguin

Strigiformes

This section contains 8 articles.

1. Owl (Level 4)
2. Strigidae
   1. Eurasian eagle-owl (Level 4)
   2. Little owl
   3. Scops owl
   4. Snowy owl
   5. Strix (bird)
3. Tyto (Level 4)

Prehistoric birds

This section contains 20 articles.

1. Archaeopteryx (Level 4)
2. Asteriornis
3. Balaur bondoc
4. Confuciusornis
5. Dromornis
6. Enantiornithes
7. Gastornis
8. Hesperornis
9. Ichthyornis
10. Inkayacu
11. Pelagornithidae
    1. Pelagornis
12. Phorusrhacidae
    1. Kelenken
    2. Phorusrhacos
    3. Titanis
13. Plotopteridae
14. Presbyornis
15. Teratornithidae
    1. Argentavis

Reptiles

This section contains 299 articles.

Reptiles: General

This section contains 5 articles.

1. Reptile (Level 3)
   1. Evolution of reptiles
2. Sauropsida
3. Sauria
4. Archosauromorpha

Crocodilia

This section contains 15 articles.

1. Crocodilia (Level 4)
2. Alligator (Level 4)
   1. American alligator
   2. Chinese alligator
3. Caiman (Level 4)
   1. Black caiman
   2. Cuvier's dwarf caiman
4. Crocodile (Level 4)
   1. Dwarf crocodile
   2. Freshwater crocodile
   3. Mugger crocodile
   4. Nile crocodile
   5. Saltwater crocodile
5. Gharial
6. False gharial

Lizards and other Squamata

This section contains 86 articles.

1. Squamata
   1. Lizard (Level 4)
2. Amphisbaenia
3. Cordylidae
4. Dibamidae
5. Gecko (Level 4)
   1. Eublepharis
   2. Gekkonidae
      1. Common house gecko
      2. Mediterranean house gecko
      3. Tokay gecko
6. Gila monster (Level 4)
7. Lacertidae
   1. Lacerta (genus)
   2. Viviparous lizard
8. Legless lizard
   1. Anguinae
9. Monitor lizard
   1. Asian water monitor
   2. Bengal monitor
   3. Komodo dragon (Level 4)
   4. Nile monitor
   5. Perentie
10. Skink (Level 4)
    1. Blue-tongued skink
11. Teiidae
    1. New Mexico whiptail

Iguania

This section contains 19 articles.

1. Agamidae
   1. Chinese water dragon
   2. Frilled lizard
   3. Draco (lizard)
   4. Hydrosaurus
   5. Oriental garden lizard
   6. Pogona
   7. Thorny devil
   8. Uromastyx
2. Chameleon (Level 4)
   1. Jackson's chameleon
3. Basiliscus (lizard)
4. Common collared lizard
5. Anolidae
6. Iguanidae
   1. Iguana
      1. Green iguana (Level 4)
   2. Marine iguana
7. Horned lizard (Level 4)

Snakes

This section contains 40 articles.

1. Snake (Level 4)
2. Boidae (Level 4)
   1. Anaconda
   2. Boa constrictor
3. Pythonidae
   1. Python (genus)
      1. Ball python
      2. Reticulated python
4. Scolecophidia
5. Xenopeltis

Colubridae

This section contains 7 articles.

1. Colubridae
2. Ahaetulla
3. Chrysopelea
4. Corn snake
5. Garter snake (Level 4)
6. Grass snake
7. Kingsnake

Elapidae

This section contains 17 articles.

1. Elapidae
2. Cobra
   1. King cobra
   2. Naja (Level 4)
3. Common death adder
4. Bungarus
5. Coral snake (Level 4)
6. Mamba (Level 4)
   1. Black mamba
   2. Jameson's mamba
7. Red-bellied black snake
8. Sea snake (Level 4)
   1. Sea krait
      1. Yellow-lipped sea krait
   2. Yellow-bellied sea snake
9. Taipan
   1. Inland taipan

Vipers

This section contains 6 articles.

1. Viper
2. Pit viper
   1. Agkistrodon piscivorus (Level 4)
   2. Eastern copperhead (Level 4)
3. Rattlesnake (Level 4)
4. Adder (Level 4)

Rhynchocephalia

This section contains 3 articles.

1. Rhynchocephalia
   1. Pleurosauridae
   2. Tuatara (Level 4)

Turtles

This section contains 20 articles.

1. Turtle (Level 4)
2. Alligator snapping turtle (Level 4)
3. Box turtle (Level 4)
4. Chelodina
5. Common snapping turtle (Level 4)
6. Diamondback terrapin
7. Painted turtle (Level 4)
8. Red-eared slider (Level 4)
9. Sea turtle (Level 4)
   1. Green sea turtle
   2. Leatherback sea turtle
   3. Loggerhead sea turtle
   4. Hawksbill sea turtle
10. Tortoise (Level 4)
    1. Aldabra giant tortoise
    2. Galápagos tortoise (Level 4)
    3. African spurred tortoise
    4. Testudo (genus)
11. Trionychidae
12. Wood turtle

Dinosaurs

This section contains 88 articles.

1. Dinosaur (Level 3)
2. Feathered dinosaur
3. Eoraptor
4. Herrerasaurus
5. Saurischia

Ornitischians

This section contains 33 articles.

1. Ornithischia
2. Heterodontosauridae
   1. Heterodontosaurus
3. Thescelosaurus

Marginocephalia

This section contains 11 articles.

1. Marginocephalia
2. Pachycephalosauria
   1. Pachycephalosaurus
   2. Stegoceras
3. Ceratopsia
   1. Pachyrhinosaurus
   2. Protoceratops
   3. Psittacosaurus
   4. Styracosaurus
   5. Triceratops (Level 4)
   6. Yinlong

Ornithopoda

This section contains 9 articles.

1. Ornithopoda
2. Hypsilophodon
3. Iguanodon (Level 4)
4. Leaellynasaura
5. Hadrosauridae
   1. Corythosaurus
   2. Edmontosaurus
   3. Lambeosaurus
   4. Parasaurolophus

Thyreophora

This section contains 9 articles.

1. Thyreophora
2. Ankylosauria
   1. Ankylosaurus
   2. Euoplocephalus
   3. Nodosauridae
3. Scelidosaurus
4. Stegosauria
   1. Kentrosaurus
   2. Stegosaurus (Level 4)

Sauropodomorpha

This section contains 13 articles.

1. Plateosaurus

Sauropods

This section contains 12 articles.

1. Sauropoda (Level 4)
2. Amargasaurus
3. Apatosaurus
4. Brachiosaurus
5. Brontosaurus
6. Camarasaurus
7. Diplodocus (Level 4)
8. Europasaurus
9. Mamenchisauridae
10. Titanosauria
    1. Argentinosaurus
    2. Saltasauridae

Theropods

This section contains 37 articles.

1. Theropoda
2. Carnosauria
   1. Abelisauridae
      1. Carnotaurus
   2. Allosaurus (Level 4)
   3. Ceratosaurus
   4. Dilophosaurus
   5. Giganotosaurus
   6. Masiakasaurus
   7. Megalosaurus
   8. Spinosauridae
      1. Baryonyx
      2. Spinosaurus
3. Coelophysis
4. Coelurosauria
   1. Alvarezsauridae
   2. Anchiornis
   3. Caenagnathidae
   4. Compsognathus
   5. Dromaeosauridae
      1. Deinonychus
      2. Halszkaraptor
      3. Incisivosaurus
      4. Microraptor
      5. Unenlagiinae
      6. Utahraptor
      7. Velociraptor (Level 4)
   6. Ornithomimosauria
      1. Deinocheirus
      2. Ornithomimus
   7. Oviraptor
   8. Scansoriopterygidae
   9. Therizinosaurus
   10. Troodontidae
   11. Tyrannosauroidea
       1. Tyrannosaurus (Level 4)
       2. Yutyrannus

Pterosaurs

This section contains 15 articles.

1. Pterosaur (Level 4)
2. Anurognathidae
3. Azhdarchidae
   1. Hatzegopteryx
   2. Quetzalcoatlus
4. Dimorphodon
5. Dsungaripterus
6. Peteinosaurus
7. Pteranodon
8. Pterodactylus
9. Pterodaustro
10. Rhamphorhynchus
11. Ornithocheirus
12. Tapejaridae
    1. Thalassodromeus

Other prehistoric archosaurs

This section contains 23 articles.

1. Aetosauria
2. Euparkeria
3. Lagerpetidae
4. Metriorhynchidae
5. Phytosauria
6. Poposauroidea
   1. Arizonasaurus
   2. Effigia
7. Postosuchus
8. Proterosuchus
9. Scleromochlus
10. Silesauridae
11. Teleosauridae

Prehistoric crocodiles

This section contains 10 articles.

1. Boverisuchus
2. Deinosuchus
3. Notosuchia
   1. Baurusuchidae
   2. Kaprosuchus
   3. Simosuchus
4. Mekosuchus
5. Sarcosuchus
6. Stomatosuchidae
7. Voay

Other prehistoric reptiles

This section contains 44 articles.

1. Drepanosauromorpha
2. Youngina
3. Hylonomus
4. Longisquama
5. Rhynchosauria
6. Sharovipteryx
7. Shringasaurus
8. Tanystropheus

Parareptilia

This section contains 3 articles.

1. Parareptilia
   1. Pareiasauria
      1. Scutosaurus

Prehistoric squamates

This section contains 8 articles.

1. Madtsoiidae
2. Megalania
3. Mosasaur
   1. Dallasaurus
   2. Mosasaurus
   3. Tylosaurus
4. Najash
5. Titanoboa

Choristoderes

This section contains 2 articles.

1. Choristodera
   1. Champsosaurus

Prehistoric turtles

This section contains 4 articles.

1. Archelon
2. Meiolania
3. Proganochelys
4. Stupendemys

Prehistoric marine reptiles

This section contains 19 articles.

1. Ichthyosauria
   1. Ichthyosaurus
   2. Ophthalmosaurus
   3. Platypterygius
   4. Shonisaurus
   5. Temnodontosaurus
2. Mesosaurus
3. Nothosaurus
4. Placodontia
5. Plesiosaur (Level 4)
   1. Plesiosauroidea
      1. Cryptoclidus
      2. Elasmosaurus
      3. Polycotylidae
      4. Plesiosaurus
   2. Pliosauroidea
      1. Kronosaurus
      2. Liopleurodon
6. Thalattosauria

Reptiliomorphs

This section contains 3 articles.

1. Reptiliomorpha
   1. Diadectes
   2. Seymouria

Amphibians

This section contains 55 articles.

1. Amphibian (Level 3)
2. Caecilian (Level 4)

Frogs and toads

This section contains 28 articles.

1. Frog (Level 4)
2. African bullfrog
3. Alytidae
   1. Common midwife toad
4. Banded bullfrog
5. Ceratophryidae
6. Darwin's frog
7. European spadefoot toad
8. Fire-bellied toad
9. Glass frog
10. Goliath frog
11. Hylidae (Level 4)
    1. Agalychnis
12. Leptodactylidae (Level 4)
13. Mantella
14. Poison dart frog
15. Tailed frog
16. Toad
17. Ranidae (Level 4)
    1. American bullfrog (Level 4)
    2. Rana (genus)
    3. Wood frog
18. True toad (Level 4)
    1. Cane toad
    2. Common toad
    3. Duttaphrynus melanostictus
19. Tree frog
20. Xenopus

Salamanders and newts

This section contains 15 articles.

1. Salamander (Level 4)
2. Axolotl
3. Asiatic salamander
4. Giant salamander
   1. Chinese giant salamander
   2. Japanese giant salamander
5. Mole salamander
   1. Fire salamander
6. Necturus
7. Olm
8. Plethodontidae
9. Newt (Level 4)
   1. Eastern newt
   2. Rough-skinned newt
10. Sirenidae

Prehistoric amphibians

This section contains 10 articles.

1. Acanthostega
2. Ichthyostega
3. Lepospondyli
   1. Diplocaulus
   2. Microsauria
4. Temnospondyli
   1. Koolasuchus
   2. Stereospondyli
5. Tiktaalik
6. Triadobatrachus

Fishes

This section contains 307 articles.

Fishes: General

This section contains 2 articles.

1. Fish (Level 3)
2. Evolution of fish

Fishes by habitat

This section contains 9 articles.

1. Coastal fish
2. Coldwater fish
3. Coral reef fish (Level 4)
4. Deep-sea fish (Level 4)
5. Demersal fish
6. Freshwater fish
7. Pelagic fish
8. Marine fish
9. Tropical fish

Chondrichthyes

This section contains 48 articles.

1. Chondrichthyes (Level 4)

Batoidea

This section contains 13 articles.

1. Batomorphi (Level 4)
2. Eagle ray
   1. Manta ray (Level 4)
   2. Cownose ray
3. Electric ray (Level 4)
4. Guitarfish
   1. Fiddler ray
   2. Sawfish (Level 4)
   3. Wedgefish
5. Skate (fish) (Level 4)
6. Stingray (Level 4)
   1. Whiptail stingray
   2. Potamotrygonidae

Chimaeriformes

This section contains 4 articles.

1. Callorhinchus
2. Chimaera (Level 4)
3. Rabbit fish
4. Spotted ratfish

Sharks

This section contains 30 articles.

1. Shark (Level 4)
2. Angelshark
3. Bullhead shark
4. Carpet shark
   1. Nurse shark (Level 4)
   2. Whale shark (Level 4)
   3. Wobbegong
   4. Zebra shark
5. Scyliorhinidae
6. Cookiecutter shark
7. Cow shark
8. Frilled shark
9. Lamniformes
   1. Basking shark
   2. Goblin shark
   3. Great white shark (Level 4)
   4. Longfin mako shark
   5. Megamouth shark
   6. Sand shark
   7. Sand tiger shark
   8. Thresher shark
10. Greenland shark
11. Hammerhead shark (Level 4)
12. Houndshark
13. Requiem shark
    1. Blue shark
    2. Bull shark
    3. River shark
    4. Tiger shark (Level 4)
14. Sawshark

Osteichthyes (except Actinopterygii)

This section contains 6 articles.

1. Osteichthyes (Level 4)
2. Sarcopterygii (Level 4)
   1. Coelacanth (Level 4)
      1. Indonesian coelacanth
      2. West Indian Ocean coelacanth
   2. Lungfish (Level 4)

Actinopterygii

This section contains 227 articles.

1. Actinopterygii (Level 4)
2. Teleost

Acipenseriformes

This section contains 3 articles.

1. Paddlefish
2. Sturgeon (Level 4)
   1. Beluga (sturgeon)

Anguilliformes

This section contains 9 articles.

1. Eel (Level 4)
   1. European eel
   2. Snipe eel
2. European conger
3. Heterocongrinae
4. Moray eel
   1. Ribbon eel
5. Pelican eel
6. Tarpon

Aulopiformes

This section contains 3 articles.

1. Bathypterois grallator
2. Lancetfish
3. Synodontidae

Characiformes

This section contains 7 articles.

1. Characiformes (Level 4)
2. Characidae
3. Tetra
   1. Neon tetra
4. Pencil fish
5. Piranha (Level 4)
   1. Tambaqui

Clupeiformes

This section contains 10 articles.

1. Clupeiformes
2. Anchovy (Level 4)
3. Clupeidae
   1. Alosa
   2. Herring (Level 4)
      1. Atlantic herring
   3. Ilish (Level 4)
   4. Menhaden
   5. Sardine (Level 4)
   6. Sprat (Level 4)

Cypriniformes

This section contains 15 articles.

1. Cypriniformes (Level 4)
2. Loach
   1. Misgurnus fossilis
3. Cyprinidae
   1. Carassius
   2. Carp (Level 4)
   3. Common bream
   4. Common carp
   5. Danionin
   6. Goldfish (Level 4)
   7. Grass carp
   8. Koi (Level 4)
   9. Minnow
   10. Silver carp
   11. Tench

Esociformes

This section contains 4 articles.

1. Esocoidei
2. American pickerel
3. Muskellunge
4. Northern pike (Level 4)

Gonorynchiformes

This section contains 2 articles.

1. Gonorynchiformes
2. Milkfish (Level 4)

Gymnotiformes

This section contains 5 articles.

1. Gymnotiformes
2. Banded knifefish
3. Black ghost knifefish
4. Electric eel (Level 4)
5. Glass knifefish

Holosteans

This section contains 2 articles.

1. Gar
2. Bowfin

Myctophiformes

This section contains 2 articles.

1. Myctophiformes
2. Lanternfish

Osmeriformes and relatives

This section contains 3 articles.

1. Barreleye
2. Galaxiidae (Level 4)
3. Smelt (fish) (Level 4)

Osteoglossiformes

This section contains 5 articles.

1. Osteoglossiformes
2. Arapaima (Level 4)
3. Freshwater butterflyfish
4. Notopteridae
5. Mormyridae

Acanthomorpha

This section contains 137 articles.

1. Perciformes (Level 4)
2. Acanthuridae
   1. Paracanthurus
3. Clownfish
4. Antarctic fishes
   1. Antarctic toothfish
   2. Channichthyidae
5. Archerfish
6. Barracuda (Level 4)
7. Batrachoididae
8. Beloniformes
   1. Flying fish (Level 4)
   2. Halfbeak
   3. Needlefish
   4. Pacific saury
   5. Ricefish
   6. Wrestling halfbeak
9. Billfish
   1. Marlin (Level 4)
   2. Sailfish
   3. Swordfish (Level 4)
10. Black swallower
11. Blennioidei
    1. Butterflyfish
12. Caranx
13. Cichlid (Level 4)
    1. Pterophyllum
    2. Tilapia (Level 4)
14. Cirrhitidae
15. Cyprinodontiformes (Level 4)
    1. Four-eyed fish
    2. Guppy (Level 4)
    3. Killifish
    4. Pupfish
16. Damselfish
17. Dragonet
18. Gadiformes
    1. Alaska pollock (Level 4)
    2. Burbot
    3. Cod (Level 4)
       1. Atlantic cod
    4. Grenadiers (fish)
    5. Haddock (Level 4)
    6. Hake
    7. Merlangius
    8. Pollock
19. Gasterosteoidei
    1. Stickleback (Level 4)
       1. Three-spined stickleback
20. Gobioidei (Level 4)
    1. Elacatinus
    2. Gobiinae
    3. Mudskipper
21. Gourami
    1. Siamese fighting fish (Level 4)
22. John Dory
23. Lampriformes
    1. Oarfish (Level 4)
       1. Giant oarfish
    2. Opah
    3. Ribbonfish
24. Anglerfish (Level 4)
    1. Black seadevil
    2. Fanfin
    3. Frogfish
    4. Handfish
    5. Sea toad
    6. Footballfish
    7. Goosefish
25. Mahi-mahi (Level 4)
26. Moorish idol
27. Mullet (fish) (Level 4)
    1. Flathead grey mullet
28. Murray cod
29. Nile perch
30. Ophidiiformes (Level 4)
    1. Cusk-eel
    2. Pearlfish
    3. Viviparous brotula
31. Parrotfish
32. Perch (Level 4)
    1. European perch
33. Pumpkinseed
34. Pomacanthidae
    1. Emperor angelfish
35. Platax
36. Flatfish (Level 4)
    1. Flounder
    2. Halibut
    3. Plaice (Level 4)
    4. Sole (fish)
    5. Turbot (Level 4)
37. Pomfret
38. Priacanthidae
39. Prowfish
40. Rabbitfish
41. Remora (Level 4)
42. Red mullet
43. Scombridae
    1. Bonito
    2. Mackerel (Level 4)
    3. Spanish mackerel
    4. Tuna (Level 4)
       1. Pacific bluefin tuna
       2. Skipjack tuna
44. Scorpaeniformes (Level 4)
    1. Flathead (fish)
    2. Lionfish
    3. Sebastinae
    4. Scorpaenidae
    5. Triglidae
45. Serranidae (Level 4)
    1. Anthias anthias
    2. European seabass (Level 4)
    3. Grouper (Level 4)
46. Sparidae
47. Syngnathiformes
    1. Common seadragon
    2. Leafy seadragon
    3. Pipefish
    4. Seahorse (Level 4)
    5. Shrimpfish
    6. Trumpetfish
48. Tetraodontiformes
    1. Filefish
    2. Ocean sunfish (Level 4)
    3. Ostraciidae
    4. Porcupinefish
    5. Tetraodontidae (Level 4)
       1. Takifugu
    6. Triggerfish
49. Trachichthyiformes
    1. Anomalopidae
    2. Slimehead
50. Tilefish
51. Weever
52. Wrasse (Level 4)
    1. Humphead wrasse

Polypteriformes

This section contains 2 articles.

1. Bichir (Level 4)
2. Reedfish

Salmoniformes

This section contains 7 articles.

1. Salmonidae (Level 4)
2. Coregonus
3. Oncorhynchus
   1. Rainbow trout
4. Salmon (Level 4)
   1. Atlantic salmon
5. Trout (Level 4)

Siluriformes

This section contains 5 articles.

1. Catfish (Level 4)
   1. Basa (fish)
   2. Black bullhead
   3. Wels catfish
2. Loricariidae (Level 4)

Stomiiformes

This section contains 4 articles.

1. Stomiiformes
2. Gonostomatidae
3. Marine hatchetfish
4. Viperfish

Prehistoric fish

This section contains 15 articles.

1. Placoderm (Level 4)
   1. Bothriolepis
   2. Dunkleosteus

Prehistoric chondrichthyans

This section contains 6 articles.

1. Acanthodii (Level 4)
2. Cretoxyrhina
3. Helicoprion
4. Hybodontiformes
5. Megalodon
6. Stethacanthus

Prehistoric osteichthyans

This section contains 6 articles.

1. Eusthenopteron
2. Hyneria
3. Leedsichthys
4. Mawsonia (fish)
5. Osteolepis
6. Xiphactinus

Agnatha

This section contains 17 articles.

1. Agnatha (Level 4)
2. Cyclostomi
3. Hagfish (Level 4)
4. Lamprey (Level 4)
   1. Pouched lamprey
   2. Sea lamprey

Prehistoric agnatha and early chordates

This section contains 11 articles.

1. Ostracoderm (Level 4)
   1. Anaspida
   2. Arandaspis
   3. Cephalaspis
   4. Galeaspida
   5. Pteraspis
2. Conodont
3. Haikouichthys
4. Pikaia
5. Thelodonti
6. Vetulicolia

Arthropods

This section contains 379 articles.

1. Arthropod (Level 3)

Crustaceans

This section contains 84 articles.

1. Crustacean (Level 3)
2. Argulidae
3. Barnacle
   1. Pollicipes pollicipes
   2. Lepas anatifera
4. Branchiopoda
   1. Brine shrimp
      1. Sea-Monkeys
   2. Diplostraca
   3. Notostraca
5. Copepod
6. Ostracod (Level 4)

Malacostraca

This section contains 72 articles.

1. Malacostraca (Level 4)
2. Amphipoda
3. Cumacea
4. Isopoda
   1. Giant isopod
   2. Ligia
   3. Woodlouse (Level 4)
5. Krill (Level 4)
6. Leptostraca
7. Mantis shrimp
   1. Squilla mantis

Decapoda

This section contains 61 articles.

1. Decapod (Level 4)
2. Axiidea
3. Stenopodidea

Hermit crabs and relatives

This section contains 9 articles.

1. Anomura
2. Coconut crab
3. Hermit crab
4. Hippoidea
5. King crab
   1. Red king crab
6. Porcelain crab
7. Squat lobster
   1. Kiwa hirsuta

Crabs

This section contains 23 articles.

1. Crab (Level 4)
   1. Brachyura
2. Cancer pagurus
3. Carcinus maenas
4. Christmas Island red crab
5. Dromiidae
6. Fiddler crab
7. Freshwater crab
8. Ghost crab
9. Grapsus grapsus
10. Horsehair crab
11. Majoidea
    1. Chionoecetes
    2. Japanese spider crab
    3. Maja squinado
12. Mangrove crab
13. Portunidae
    1. Callinectes sapidus
    2. Scylla serrata
    3. Velvet crab
14. Ranina ranina
15. Terrestrial crab
16. Trapeziidae

Crayfishes and lobsters

This section contains 13 articles.

1. Crayfish (Level 4)
   1. Astacus astacus
   2. Procambarus alleni
   3. Cherax pulcher
2. Lobster (Level 4)
   1. American lobster
   2. Homarus gammarus
   3. Nephrops norvegicus
   4. Metanephrops challengeri
3. Reef lobster
4. Slipper lobster
5. Spiny lobster
6. Furry lobster

Shrimps and prawns

This section contains 13 articles.

1. Shrimp (Level 4)
2. Alpheidae
3. Caridea
4. Cleaner shrimp
5. Crangon crangon
6. Macrobrachium rosenbergii
7. Palaemon serratus
8. Pandalus borealis
9. Rhynchocinetidae
10. Prawn
11. Penaeus monodon
12. Whiteleg shrimp
13. Indian prawn

Arachnids

This section contains 53 articles.

1. Amblypygi
2. Arachnid (Level 4)
3. Opiliones
4. Palpigradi
5. Pseudoscorpion (Level 4)
6. Ricinulei
7. Schizomida
8. Solifugae
9. Tick (Level 4)
10. Uropygi

Mites

This section contains 5 articles.

1. Mite (Level 4)
2. Parasitiformes
3. Acariformes
   1. Flour mite
   2. Trombiculidae

Scorpions

This section contains 6 articles.

1. Scorpion (Level 4)
2. Arizona bark scorpion
3. Deathstalker
4. Emperor scorpion
5. Fattail scorpion
6. Tityus serrulatus

Spiders

This section contains 30 articles.

1. Spider (Level 4)
   1. Evolution of spiders
2. Agelenidae
3. Australian funnel-web spider
4. Brown recluse spider
5. Diving bell spider
6. Dolomedes
7. Huntsman spider
8. Jumping spider (Level 4)
   1. Bagheera kiplingi
   2. Portia (spider)
      1. Portia labiata
9. Latrodectus
   1. Redback spider
10. Linyphiidae
11. Mesothelae
    1. Kimura spider
12. Orb-weaver spider
13. Pholcidae
    1. Pholcus phalangioides
14. Phoneutria
15. Tarantula (Level 4)
    1. Aphonopelma chalcodes
    2. Brachypelma hamorii
    3. Goliath birdeater
    4. Poecilotheria metallica
16. Tegenaria domestica
17. Theridiidae
18. Thomisidae
19. Wolf spider

Prehistoric arachnids

This section contains 2 articles.

1. Phalangiotarbida
2. Trigonotarbida

Insects and other hexapods

This section contains 210 articles.

1. Hexapoda (Level 4)

Non-insect hexapods

This section contains 3 articles.

1. Diplura
2. Protura
3. Springtail (Level 4)

Insects: General

This section contains 23 articles.

1. Insect (Level 3)
   1. Evolution of insects
   2. Pterygota (Level 4)
2. Archaeognatha
3. Caddisfly
4. Earwig (Level 4)
5. Embioptera
6. Flea (Level 4)
   1. Cat flea
   2. Dog flea
   3. Oriental rat flea
7. Grylloblattidae
8. Mantophasmatidae
9. Mayfly
10. Mecoptera
11. Megaloptera
12. Neuroptera
    1. Antlion
13. Plecoptera
14. Snakefly
15. Strepsiptera
16. Thrips
17. Zoraptera

Coleoptera (beetles)

This section contains 27 articles.

1. Beetle (Level 4)
2. Blister beetle
3. Cardinal beetle
4. Cleridae
5. Coccinellidae (Level 4)
   1. Coccinella septempunctata
6. Dung beetle (Level 4)
7. Firefly (Level 4)
8. Flour beetle
9. Ground beetle
10. Leaf beetle
    1. Colorado potato beetle
11. Longhorn beetle
12. Rove beetle
    1. Nairobi fly
13. Scarabaeidae
    1. Cockchafer
    2. Goliathus
    3. Hercules beetle
    4. Japanese rhinoceros beetle
    5. Stag beetle
14. Water beetle
    1. Dytiscus
    2. Whirligig beetle
15. Weevil (Level 4)
    1. Curculionidae
       1. Giraffe weevil

Blattodea (cockroaches and termites)

This section contains 9 articles.

1. Blattodea
2. Cockroach (Level 4)
   1. American cockroach
   2. German cockroach
   3. Madagascar hissing cockroach
3. Termite (Level 4)
   1. Coptotermes gestroi
   2. Formosan subterranean termite
   3. Macrotermes bellicosus

Diptera (flies)

This section contains 19 articles.

1. Fly (Level 4)

Nematocera

This section contains 10 articles.

1. Black fly (Level 4)
2. Crane fly (Level 4)
3. Cecidomyiidae
4. Midge
5. Mosquito (Level 4)
   1. Aedes aegypti
   2. Anopheles
   3. Culex
6. Psychodidae
7. Sandfly

Brachycera

This section contains 8 articles.

1. Drosophila melanogaster (Level 4)
2. Botfly (Level 4)
3. Calliphoridae (Level 4)
4. Tabanidae (Level 4)
5. Housefly (Level 4)
6. Tachinidae
7. Tephritidae
8. Tsetse fly (Level 4)

Hemiptera (true bugs)

This section contains 28 articles.

1. Hemiptera (Level 4)

Heteroptera

This section contains 17 articles.

1. Heteroptera
2. Bed bug (Level 4)
3. Coreidae
4. Gerridae
   1. Halobates
5. Lygaeidae
6. Nepomorpha
   1. Belostomatidae
   2. Corixidae
   3. Notonectidae
   4. Ranatra
7. Pentatomoidea
   1. Acanthosoma
8. Pyrrhocoris apterus
9. Reduviidae
10. Saldidae
11. Veliidae

Auchenorrhyncha

This section contains 7 articles.

1. Aphrophoridae
2. Cicada (Level 4)
   1. Periodical cicadas
3. Fulgoridae
4. Leafhopper (Level 4)
5. Planthopper
6. Treehopper

Sternorrhyncha

This section contains 3 articles.

1. Aphid (Level 4)
2. Scale insect (Level 4)
3. Whitefly (Level 4)

Hymenoptera

This section contains 36 articles.

1. Hymenoptera (Level 4)
2. Sawfly

Apocrita

This section contains 34 articles.

1. Wasp (Level 4)
2. Hornet (Level 4)
   1. Asian giant hornet
3. Fig wasp
4. Gall wasp
5. Sceliphrini
6. Parasitoid wasp
7. Tarantula hawk
8. Yellowjacket

Ants

This section contains 16 articles.

1. Ant (Level 4)
2. Argentine ant
3. Army ant
4. Carpenter ant (Level 4)
5. Fire ant (Level 4)
6. Formica rufa
7. Harvester ant
8. Honeypot ant
9. Leafcutter ant
10. Myrmecia (ant)
11. Ochetellus glaber
12. Pharaoh ant
13. Tapinoma melanocephalum
14. Tapinoma sessile
15. Weaver ant
16. Yellow crazy ant

Bees

This section contains 9 articles.

1. Bee (Level 4)
2. Bumblebee (Level 4)
3. Carpenter bee
4. Cuckoo bee
5. Stingless bee
6. Honey bee
   1. Africanized bee (Level 4)
   2. European dark bee
   3. Western honey bee (Level 4)

Lepidoptera

This section contains 26 articles.

1. Lepidoptera (Level 4)
2. Moth (Level 4)
   1. Clothes moth
3. Caterpillar
4. Bombyx mori (Level 4)
5. Erebidae
   1. Lymantria dispar dispar
6. Geometer moth (Level 4)
   1. Peppered moth
7. Lasiocampidae
8. Luna moth
9. Noctuidae
   1. Fall armyworm
10. Sphingidae
    1. Acherontia lachesis
    2. Hummingbird hawk-moth
11. Tortricidae

Papilionoidea (butterflies)

This section contains 9 articles.

1. Butterfly (Level 4)
2. Swallowtail butterfly (Level 4)
   1. Birdwing
3. Gonepteryx rhamni
4. Nymphalidae
   1. Monarch butterfly
   2. Morpho (genus)
   3. Vanessa cardui
5. Pieris brassicae (Level 4)

Mantodea (mantises)

This section contains 5 articles.

1. Mantis (Level 4)
2. Dead leaf mantis
3. Empusidae
4. Flower mantis
5. Stick mantis

Odonata

This section contains 7 articles.

1. Odonata (Level 4)
2. Damselfly (Level 4)
3. Dragonfly (Level 4)
   1. Libellulidae
      1. Libellula
   2. Emperor dragonfly
   3. Southern hawker

Orthoptera

This section contains 12 articles.

1. Orthoptera (Level 4)
2. Cooloola (insect)
3. Cricket (insect) (Level 4)
4. Grasshopper (Level 4)
   1. Hump-winged grig
5. Mole cricket (Level 4)
6. Locust (Level 4)
7. Tetrigidae
8. Tettigoniidae (Level 4)
9. Wētā
   1. Giant wētā
   2. Rhaphidophoridae

Phasmatodea (stick insects)

This section contains 5 articles.

1. Phasmatodea (Level 4)
2. Common walkingstick
3. Heteropteryx
4. Phylliidae
5. Timema

Psocodea

This section contains 6 articles.

1. Psocodea
2. Psocoptera
3. Louse (Level 4)
   1. Body louse (Level 4)
   2. Crab louse
   3. Head louse

Zygentoma

This section contains 3 articles.

1. Zygentoma
2. Firebrat
3. Silverfish

Myriapoda

This section contains 12 articles.

1. Myriapoda (Level 4)
2. Centipede (Level 4)
   1. Cryptopidae
   2. Scolopendridae
      1. Scolopendra gigantea
   3. Scutigera coleoptrata
3. Millipede (Level 4)
   1. Archispirostreptus gigas
   2. Julida
   3. Pill millipede
4. Pauropoda
5. Symphyla

Chelicerata (except arachnids)

This section contains 4 articles.

1. Chelicerata (Level 4)
2. Sea spider
3. Xiphosura (Level 4)
   1. Horseshoe crab

Fossil arthropods

This section contains 15 articles.

1. Arthropleura
2. Canadaspis
3. Dinocaridida
   1. Anomalocaris
   2. Opabinia
   3. Tamisiocarididae
4. Eurypterid (Level 4)
   1. Eurypterus
   2. Jaekelopterus
   3. Megarachne
5. Leanchoilia
6. Meganeura
7. Sidneyia
8. Thylacocephala
9. Trilobite (Level 4)

Mollusks

This section contains 73 articles.

1. Mollusca (Level 3)
   1. Evolution of molluscs
2. Aplacophora
3. Chiton
4. Halkieriid
5. Monoplacophora
6. Tusk shell
7. Wiwaxia

Bivalvia

This section contains 17 articles.

1. Bivalvia (Level 4)
2. Clam
   1. Cockle (bivalve)
   2. Ensis
   3. Geoduck
   4. Giant clam
   5. Veneridae
   6. Zebra mussel
3. Mussel
4. Oyster (Level 4)
5. Pinnidae
6. Rudists
7. Scallop (Level 4)
   1. Pecten maximus
8. Shipworm
9. Unionida
   1. Freshwater pearl mussel

Cephalopods

This section contains 19 articles.

1. Cephalopod
2. Ammonoidea
3. Argonaut (animal)
4. Belemnitida
5. Cuttlefish
6. Nautiloid
   1. Nautilus
7. Octopus (Level 4)
   1. Amphioctopus marginatus
   2. Blue-ringed octopus
   3. Common octopus
   4. Giant Pacific octopus
   5. Umbrella octopus
8. Orthoceras
9. Squid (Level 4)
   1. Colossal squid
   2. Giant squid
   3. Vampire squid
10. Spirula

Gastropods

This section contains 29 articles.

1. Gastropod (Level 4)
2. Slug
   1. Banana slug
3. Sea slug
   1. Aplysiida
   2. Clione limacina
   3. Glaucus atlanticus
   4. Nudibranch
   5. Spanish dancer
4. Snail
5. Freshwater snail
6. Land snail
   1. Achatina
   2. Helicidae
      1. Cornu aspersum
      2. Helix pomatia
   3. Lissachatina fulica
7. Sea snail
   1. Abalone
   2. Charonia
   3. Conch
   4. Cone snail
   5. Cowrie
   6. Limpet
   7. Muricidae
   8. Turrid
   9. Turritellidae
   10. Whelk
   11. Wentletrap

Echinoderms

This section contains 15 articles.

1. Echinoderm (Level 4)
2. Crinoid
3. Brittle star
   1. Basket star
4. Sea cucumber (Level 4)
   1. Scotoplanes globosa
   2. Sea apple
5. Sea urchin (Level 4)
   1. Sand dollar
   2. Strongylocentrotus purpuratus
6. Starfish (Level 4)
   1. Crown-of-thorns starfish
   2. Culcita (echinoderm)
   3. Linckia laevigata
   4. Sunflower sea star

Bilateria, others

This section contains 58 articles.

1. Bilateria (Level 4)
2. Deuterostome
3. Protostome

Chordata (except vertebrates)

This section contains 5 articles.

1. Chordate (Level 4)
2. Lancelet
3. Tunicate
   1. Ascidiacea
   2. Salp

Ecdysozoa

This section contains 14 articles.

1. Ecdysozoa
2. Kinorhyncha
3. Lobopodia
   1. Microdictyon
4. Loricifera
5. Nematode (Level 4)
   1. Ancylostoma
   2. Ascaris lumbricoides
   3. Caenorhabditis elegans (Level 4)
6. Nematomorpha
7. Onychophora
   1. Hallucigenia
8. Priapulida
9. Tardigrade (Level 4)

Spiralia

This section contains 34 articles.

Gnathifera

This section contains 5 articles.

1. Chaetognatha
2. Gnathostomulid
3. Limnognathia
4. Rotifer
5. Acanthocephala

Lophotrochozoa

This section contains 29 articles.

1. Lophotrochozoa
2. Brachiopod
   1. Lingulata
3. Bryozoa (Level 4)
4. Symbion
5. Dicyemida
6. Entoprocta
7. Gastrotrich
8. Nemertea
9. Orthonectida
10. Ottoia
11. Phoronid

Annelida

This section contains 11 articles.

1. Annelid (Level 4)
2. Leech (Level 4)
3. Polychaete (Level 4)
   1. Arenicola
   2. Nereididae
   3. Riftia
4. Oligochaeta
   1. Earthworm (Level 4)
      1. Giant Gippsland earthworm
5. Sipuncula
6. Tubifex

Platyhelmithes (flatworms)

This section contains 6 articles.

1. Flatworm (Level 4)
2. Turbellaria
3. Trematoda
4. Cestoda (Level 4)
   1. Eucestoda
      1. Taenia solium

Bilateria, others

This section contains 2 articles.

1. Hemichordate
2. Xenacoelomorpha

Cnidarians

This section contains 23 articles.

1. Cnidaria (Level 4)
2. Polyp (zoology)
3. Anthozoa
   1. Coral (Level 4)
   2. Alcyonacea
   3. Brain coral
   4. Precious coral
   5. Sea anemone
   6. Sea pen
4. Box jellyfish
   1. Chironex fleckeri
5. Hydrozoa
   1. Hydra (genus)
   2. Siphonophore
      1. Portuguese man o' war
      2. Praya dubia
   3. Turritopsis dohrnii
6. Jellyfish (Level 4)
   1. Chrysaora fuscescens
   2. Scyphozoa
      1. Aurelia (cnidarian)
      2. Lion's mane jellyfish
7. Myxozoa

Porifera

This section contains 6 articles.

1. Sponge (Level 4)
2. Calcareous sponge
3. Demosponge
   1. Spongia officinalis
4. Hexactinellid
5. Homosclerophorida

Other animals

This section contains 4 articles.

1. Ctenophora
2. Dickinsonia
3. Placozoa
   1. Trichoplax