Megalonyx jeffersonii, ground sloth claw, 3rd distal phalange, Now The Official State Fossil Of West Stegosaurus The Russian researcher Sergei Zimov

The Russian researcher Sergei Zimov estimates that during the last Ice Age

to a lesser degree

Eldonia is a great example of a problematic fossil organism

Mongolia and Madagascar

bony crest was as big or bigger than the rest of its skull and may have been used to produce sounds

Megalonyx jeffersonii, ground sloth claw, 3rd distal phalange, Now The Official State Fossil Of West Stegosaurus The Russian researcher Sergei ZimovMegalonyx jeffersonii Jefferson Ground Sloth West Virginia State Fossil 3rd Distal Phalange President, 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