Acheloma is an extinct genus of temnospondyl from the Early Permian in the United States. The type species is known as A. cumminsi. Trematops milleri has been synonymized with Acheloma. Like other trematopids, was a large terrestrial carnivore. One species, A. dunni, may have been the top predator of the diverse assemblage in Oklahoma.
The following cladogram shows the phylogenetic position of Acheloma, from Polley & Reisz, 2011.
Discovery[]
Remains include the holotype (OMNH 73281): nearly complete skull with associated atlas–axis complex and partial lower jaw.
Referred specimens: BMRP 2007.3.4 (skull), BMRP2007.3.1 (snout), OMNH 52365 (jaw articulation), OMNH 73514 (pelvic girdle), OMNH 52545, (right humerus).
Remians include Holotype (OMNH 73281): nearly complete skull with associated atlas–axis complex and partial lower jaw.
Referred specimens: BMRP 2007.3.4 (skull), BMRP2007.3.1 (snout), OMNH 52365 (jaw articulation), OMNH 73514 (pelvic girdle), OMNH 52545, (right humerus)