Pliensbachian

A pair of Megapnosaurus dinosaurs threaten Massospondylus

Gephyrosaurus is an extinct animal from the Early Jurassic ?

Megapnosaurus kayentakatae, a prehistoric era dinosaur

Gephyrosaurus is an extinct animal from the Early Jurassic ?

Archaeothyris is a synapsid from the Late Carboniferous ?

Cryolophosaurus standing over it's prey

A Megapnosaurus dinosaur goes for a swim in a prehistoric ?

Megapnosaurus, a small dinosaur from the early Jurassic

Scelidosaurus, Nothronychus and Argentinosaurus dinosarus ?