Secodontosaurus willistoni Archelon Archelon's limbs were also remarkable

Archelon's limbs were also remarkable

The Dilophosaurus was a medium-sized bipedal predator

Diet: It is estimated that Protoceratops andrewsi was primarily herbivorous

approximately 155-145 million years ago

Secodontosaurus willistoni Archelon Archelon's limbs were also remarkableSecodontosaurus 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