Named By: Edwasrd Drinker Cope - 1882.
Synonyms: Trematops milleri, Trematops thomasi, Trematops willistoni, Trematops stonei.
Classification: Chordata, Amphibia, Temnospondyli, Trematopidae.
Species: A. cumminsi (type), A. dunni.
Size: Details unavailable.
Known locations: USA, Oklahoma, Texas.
Time period: Across the Early Permian.
Fossil representation: Several individuals.
Acheloma was a relatively large for its time temnopondyl amphibian that would have hunted for other small animals around the water systems of what would eventually be the United States back in the early Permian. This could include swimming around in the water to venturing on land for extended periods.
- Third contribution to the history of the Vertebrata of the Permian formation of Texas, Edward Drinker Cope - 1882.
- Trematops milleri Williston, 1909, identified as a junior synonym of Acheloma cumminsi Cope, 1882 : with a revision of the genus. - American Museum Novitates. 2902: 1–12. - Robert Reisz & David William Dilkes - 1987.
- A Juvenile Specimen of the Trematopid Acheloma From Richards Spur, Oklahoma and Challenges of Trematopid Ontogeny. - Frontiers in Earth Science. 7: 38. - Bryan M. Gee, Joseph J. Bevitt & Robert R. Reisz - 2019.