Ophiacodon
Ophiacodon: Research Database Synapsida · Late Carboniferous-Early Permian (~305-280 MYA) · North America — USA (Texas, New Mexico, Colorado) Research Note: Ophiacodon was a large synapsid from the Late Carboniferous and Early Permian of North America — one of the earliest known amniotes and a key taxon for understanding the early evolution of synapsids, … Read more