Named By: Robert L. Carroll - 1969.
Classification: Chordata, Amphibia, Lepospondyli, Adelospondyli, Acherontiscidae.
Species: A. caledoniae (type).
Size: About 14 centimetres long.
Known locations: Scotland.
Time period: Visean of the Carboniferous.
Fossil representation: Skull and partial post cranial skeleton.
Named after a tributary of the River Styx from Ancient Greek mythology, Acherontiscus was a small lepospondyl that lived in the area that what would become Scotland back in the Carboniferous period. Acherontiscus is also the type genus of its own group, the Acherontiscidae. Acherontiscus is noted for having a long body but proportionately small limbs. This may have been an evolutionary development that allowed Acherontiscus to pass through and amongst narrow obstacles in search of small prey.
- A new family of Carboniferous amphibians. - Robert L. Carroll - 1969.
- Acherontiscus caledoniae: the earliest heterodont and durophagous tetrapod. - Royal Society Open Science. 6 (5). - Jennifer A. Clack, Marcello Ruta, Andrew R. Milner, John E. A. Marshall, Timothy R. Smithson & Keturah Z. Smithson - 2019.