Zygorhiza, early whale canine tooth Alamosaurus short-necked plesiosaur that lived during

short-necked plesiosaur that lived during the middle to late Jurassic period

and were arranged questionably in terms of tooth sequence and position

Regarded as one of the largest and most powerful predators in vertebrate history Megalodon probably had a profound impact on the structure of marine communities

This is the ungual phalanx (toe) of an Edmotosaurus found in the Hell Creek Formation of South Dakota

The first photo is the replica

Zygorhiza, early whale canine tooth Alamosaurus short-necked plesiosaur that lived duringZygorhiza 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