Acheloma is an extinct genus of temnospondyl that lived during the Early Permian. The type species is A. cumminsi.
Acheloma
Restoration of A. cumminsi
The Arroyo Formation, sometimes termed the Lower Clear Fork Formation, is a geologic formation in Texas. It preserves fossils dating back to the Kungurian stage of the Permian period. It is the lower-most portion of the Clear Fork Group, part of a series of fossiliferous Permian strata in the south-central United States known as the red beds.
A skeleton of Dimetrodon grandis found at the Craddock bonebed on display at the National Museum of Natural History
Brachydectes
Diplocaulus
Pelodosotis