The Pteranodon

A notable feature of Zygophyseter varolai is its elongated lower jaw

Although efforts have been made to estimate their appearance and anatomy accurately

such as the jaw and crest

probably as a result of climatic changes and environmental pressures

Herrerasaurus ischigualastensis Scale:1:35 The PteranodonHerrerasaurus ischigualastensis is a dinosaur that lived during the Triassic period, approximately between 231 and 220 million years ago, in what is now Argentina. This dinosaur is significant because it is one of the oldest known dinosaurs and arouses great interest in paleontology due to its importance in understanding the early stages of dinosaur evolution. Herrerasaurus belongs to the group of theropod dinosaurs, which are the bipedal carnivores