|Class||Chordata, Amphibia, Temnospondyli, Trematopidae|
|Location||USA, Oklahoma, Texas|
Acheloma (also known as Trematops milleri) is an extinct genus of temnospondyl that lived during theEarly Permian. The type species is A. cumminsi.Trematops milleri has been synonymized with Acheloma. Like other trematopids, Acheloma was a large terrestrial carnivore. One species, A. dunni, may have been the top predator of the diverse Richards Spur assemblage in Oklahoma. The following cladogram shows the phylogeneticposition of Acheloma, from Polley & Reisz, 2011.
Remians inculde Holotype (OMNH 73281): nearly complete skull with associated atlas–axis complex and partial lower jaw.
Referred specimens: BMRP2007.3.4 (skull), BMRP2007.3.1 (snout), OMNH
52365 (jaw articulation), OMNH 73514 (pelvic girdle), OMNH 52545, (right humerus)