Medidas aproximadas del Tenontosaurus:

approximately 70-65 million years ago

He lived during the late Triassic period

It was a therapsid

which include skulls

Diictodon feliceps Variant:Hand painted Medidas aproximadas del Tenontosaurus:Diictodon feliceps is the name of an extinct species of therapsids, a group of animals that shared characteristics of both reptiles and mammals and that lived during the Permian period, approximately 260 million years ago. This particular species belonged to a subgroup of therapsids known as dicynodonts, which were characterized by having turtle like beaks and teeth specialized for crushing plants. The name "Diictodon" means "double tooth", referring