Diplocaulus salamandroides Diplocaulus (meaning "double stalk") is an extinct genus of lepospondyl amphibians which lived from the Late Carboniferous to the Late Permian of North America and Africa. Diplocaulus is by far the largest and best-known of the lepospondyls, characterized by a distinctive boomerang-shaped skull. Diplocaulus had a stocky, salamander-like body, but was relatively large, reaching up to 1 m (3.3 ft) in length. Although a complete tail is unknown for the genus, a nearly complete articulated skeleton described in 1917 preserved a row of tail vertebrae near the head. This was construed as circumstantial evidence for a long, thin tail capable of reaching the head if the animal was curled up. Most studies since this discovery have argued that anguiliform (eel-like) tail movement was the main force of locomotion utilized by Diplocaulus and its relatives.
Excerpts above from Wikipedia. Feel free to use in any project you want, with credit. All modelling was done by me. Colors and patterns referenced from the Pacific giant salamander. Reference images by PaleoHistoric on DeviantArt and Gary Nafis. Background Sound: winter lake NL 009 210108_0212.wav by klankbeeld -- https://freesound.org/s/623792/ -- License: Attribution 4.0