Ophiacodontidae is an extinct family of early eupelycosaurs from the Carboniferous and Permian. Archaeothyris, and Clepsydrops were among the earliest ophiacodontids, appearing in the Late Carboniferous.
Ophiacodontidae is a vanished family of early eupelycosaurs from the Carboniferous and Permian. Archaeothyris, and Clepsydrops were among the earliest ophiacodontids, appearing in the Late Carboniferous.