Zygorhiza, early whale tooth molar Dimetrodon perhaps an oxbow lake

perhaps an oxbow lake

this distribution of Mesosaurus supports the understanding that these great continents were once joined together

Pachycephalosaurus was one of the last non-avian dinosaurs before the Cretaceous extinction event

The pectoral fins were narrow and pointed

This replica is a Platecarpus ictericus skull

Zygorhiza, early whale tooth molar Dimetrodon perhaps an oxbow lakeZygorhiza was an archaeocete whale that lived during the late Eocene, about 40 million years ago. This ancient marine mammal had a long snout that contained many sharp teeth. The nostrils were located towards the end of the snout. Although retaining some land animal characteristcs (like differentiated teeth), it was more whale like than Basiliosaurus. It had a snake like body and small hindlimbs (including a mobile knee and toes). Many fossils have