Discosauriscus

Discosauriscus was a small seymouriamorph[1] which lived in what is now Central and Western Europe during the latest Carboniferous[2] and in the Early Permian Period.

Its best fossils have been found in the Broumov and Bačov Formations of Boskovice Furrow, in the Czech Republic.

[5] However, more recent studies concluded that some subadult, probably terrestrial specimens were known,[6][7] so the case for neoteny in this taxon is not as well-supported as once thought.

Discosauriscus had wide jaws with sharp teeth, short limbs and relatively long tail.

The body was covered with rounded scales with concentric rings, and a well-preserved lateral-line system has been described.

A reconstruction of a juvenile Discosauriscus with external gills
Fossil in Vienna