The order Pygocephalomorpha is an extinct group of peracarid crustaceans. Pygocephalomorpha appeared in the Late Devonian,[1] were abundant from the Carboniferous era until their extinction in the Early Permian era.[2][3]
| Pygocephalomorpha Temporal range: | |
|---|---|
 | |
| Fossil specimens of Hoplita ginsburgi | |
 | |
| Life restoration of Tealliocaris etheridgii | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Clade: | Pancrustacea |
| Class: | Malacostraca |
| Superorder: | Peracarida |
| Order: | †Pygocephalomorpha Beurlen, 1930 |
| Families | |
This group constituted part of the freshwater and aquatic crustacean assemblages. The carapace is relatively axially shortened, with a prominent gastric region. Laterally, a cervical groove is visible, with carapace margins which is defined by an acute spine or process, including a somewhat well developed branchiostegites"[4]
Families
editThe order contains extinct five families, and seven genera incertae sedis:[5][6]
- †Jerometichenoriidae Schram, 1978
- †Jerometichenoria Schram, 1978
- †Notocarididae Brooks, 1962
- †Notocaris Broom, 1931
- †Paulocaris Clarke, 1920
- †Pygocephalidae Brooks, 1962
- †Anthracaris Brooks, 1962
- †Mamayocaris Brooks, 1962
- †Pygocephalus Huxley, 1857
- †?Tealliocarididae Brooks, 1962 (Affinity as pygocephalomorph is uncertain[7])
- †Tealliocaris Peach, 1908
- †Laevitealliocaris Yang et al., 2018
- †Tylocarididae Taylor, Yan-Bin & Schram, 1998
- †Chaocaris Shen, 1983
- †Fujianocaris Taylor, Yan-Bin & Schram, 1998
- †Liocaris Beurlen, 1931
- †Pseudogalathea Peach, 1883
- †Tylocaris Taylor, Yan-Bin & Schram, 1998
- †Pygocephalomorpha incertae sedis
- †Bellocaris Fong, 1972
- †Hoplita Pineiro, Morosi & Ramos, 2012
- †Iraticaris Adami-Rodrigues, Pazinato & Pinto, 2016
- †Permocaris Adami-Rodrigues, Pazinato & Pinto, 2016
- †Pittinucaris Adami-Rodrigues, Pazinato & Pinto, 2016
- †Pygaspis Beurlen, 1934
- †Sosiocaris Jones, 2015
See also
editReferences
edit- ↑ Gueriau, Pierre; Charbonnier, Sylvain; Clément, Gaël (2014). "First decapod crustaceans in a Late Devonian continental ecosystem". Palaeontology. 57 (6): 1203–1213. doi:10.1111/pala.12111. ISSN 1475-4983.
- ↑ Marjorie L. Reaka-Kudla (2002). "Habitat specialization and its relation to conservation policy in Crustacea". In Elva Escobar-Briones, Fernando Alvarez (ed.). Modern approaches to the study of Crustacea. Springer. pp. 211–221. ISBN 978-0-306-47366-1.
- ↑ Pazinato, Paula Giovana; Soares, Marina Bento; Adami-Rodrigues, Karen (2016). "Systematic and palaeoecological significance of the first record of Pygocephalomorpha females bearing oöstegites (Malacostraca, Peracarida) from the lower Permian of southern Brazil". Palaeontology. 59 (6): 817–826. doi:10.1111/pala.12260. ISSN 1475-4983.
- ↑ Jones, Feldmann, Schweitzer, Reitano, Insacco, Wade, Rodney, Carrie, Agatino, Gianni (1 September 2015). "New Pygocephalomorph (Peracarida) from the Permian of the Sosio Valley (Sicily, Italy)". Journal of Crustacean Biology. 35 (5): 627–632. doi:10.1163/1937240X-00002367 – via Oxford Academic.
{{cite journal}}: CS1 maint: multiple names: authors list (link) - ↑ WoRMS. "Pygocephalomorpha". World Register of Marine Species. Retrieved 26 December 2022.
- ↑ WoRMS. "Pygocephalomorpha incertae sedis". World Register of Marine Species. Retrieved 26 December 2022.
- ↑ Jones, Wade T.; Feldmann, Rodney M.; Schram, Frederick R.; Schweitzer, Carrie E.; Maguire, Evin P. (2016). "The Proof is in the Pouch: Tealliocaris is a Peracarid". Palaeodiversity. 9 (1). doi:10.18476/pale.v9.a5.full. ISSN 1867-6294. Archived from the original on 2024-05-26.
 | This prehistoric crustacean-related article is a stub. You can help Wikipedia by adding missing information. |