Extant biological taxa that first appeared during the Hettangian age of the Lower Jurassic.
Pages in category "Extant Hettangian first appearances"
The following 4 pages are in this category, out of 4 total. This list may not reflect recent changes.
Extant biological taxa that first appeared during the Hettangian age of the Lower Jurassic.
The following 4 pages are in this category, out of 4 total. This list may not reflect recent changes.