Styracodons

The Styracodon are a species of Dinosaur-like alien beings, that appeared in the Mirage comics volume 4 issues, as well as Tales of the TMNT vol. 2.

The Styracodon and Triceraton were longtime enemies, with a violent history even longer than the Triceraton had with the Federation. Donatello discovered that the two species were actually divergent evolutions lines stemming from the same base species.

Like the Triceraton, Syracodon are named after a real-world dinosaur species, the Styracosaurus.