Megalonyx jeffersoni, ground sloth skeleton T-Rex including the advent of predators

including the advent of predators or being out-competed by the more effective Cambrian organisms

Although Megalosaurus was a typical two legged meat-eater

and is known only from fossil finds in South America

Scientific Name: Glossotherium chapadmalense

off the Chalumna River (now Tyolomnqa)

Megalonyx jeffersoni, ground sloth skeleton T-Rex including the advent of predatorsPresident, Thomas Jefferson, scientifically described fossil bones given to him by saltpeter miners found in a Monroe County cave in 1797. Jefferson thought they were the claws of a giant cat. In 1799 Casper Wistar re described the bones as a new species of extinct giant ground sloth and named it in honor of President Jefferson. Only recently have the bones been Carbon 14 dated at over 38,000 year old. On March 8, 2008 Megalonyx jeffersoni became the