👉 Cyrtonops is a genus of extinct, terrestrial tetrapod vertebrates that lived during the Late Cretaceous period (about 69-72 million years ago). They were known for their large, elongated bodies and their ability to swim. These creatures are considered one of the earliest tetrapods in the fossil record. Cyrtonops had a broad skull with a large brain, which allowed them to walk upright on two legs while still having a head-like structure.
