Teraterpeton hrynewichorum (Sues 2003, Pritchard and Sues 2019) Late Triassic, ~215 mya, was described as euryapsid (lacking a lateral temporal fenestra) and possibly related to the rhynchocephalian, Trilophosaurus on that basis. Here Teraterpeton is a sister to Trllophosaurus, but with a stretched out rostrum, an antorbital fenestra and fewer, smaller waisted teeth. Teraterpeton also nests between Sapheosaurus and Mesosuchus.
The manual unguals are robust with disparate sizes. The large acetabulum was open posteriorly and taller than the rest of the ilium.
Only the back of the skull bears a striking resmblance to that of the rhynchocephalian lepidosaur, Trilophosaurus (see below). Although little else is similar, the LRT was able to nest these two taxa together. |
