Tyrannosaurus rex, foot claw Dimetrodon There were two species of

There were two species of Diplocynodon at Messel (D

8 m (9 ft 2 in) in height and weigh as much as 4

while four large pyramidal horns projected outwards from its rear corners

the Simon site in Idaho

impression

Tyrannosaurus rex, foot claw Dimetrodon There were two species ofImagine three of these robust 9 inch long claws on each foot and you begin to get the idea: T. rex was nasty! In life they were much bigger than the fossil remains for they were covered with a sheath of horn or nail. They were used for traction, fighting and for grasping dead prey whilst the animal fed. Specs: Tyrannosaurus rex. Late Cretaceous (70 m. y. a.). North America. Shipping Included