Zygorhiza, early whale tooth molar Dimetrodon this distribution of Mesosaurus supports

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

The multituberculates had a cranial and dental anatomy superficially similar to rodents such as mice and rats

while a human arm can rotate 360 degrees at the shoulder and move through 165 degrees at the elbow

This replica is a Platecarpus ictericus skull

Zygorhiza, early whale tooth molar Dimetrodon this distribution of Mesosaurus supportsZygorhiza 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