Secodontosaurus willistoni Archelon incluyendo Montana

incluyendo Montana

supporting itself on its hind and front legs

La Pose del Modelo representa un ejemplar de Velociraptor corriendo en persecución de una de sus presas

como el cortejo y la intimidación

Secodontosaurus willistoni Archelon incluyendo MontanaSecodontosaurus willistoni, an extinct genus of synapsid, a group of mammal related animals that lived during the Permian period, approximately 275 million years ago. It was a member of a group known as therapsids, which were the predecessors of modern mammals. Secodontosaurus willistoni was a medium sized animal, with an estimated length of around 2. 7 meters. It had a large, elongated skull, with sharp, conical teeth that suggest it fed on small