Tyrannosaurus rex, right hand Styracosaurus Others are less easy to

Others are less easy to interpret and may belong to extinct phyla

Asia and North America

6---mastodon tusk

alluding to the long-held belief that mammoths lived underground and made burrows

Tyrannosaurus rex, right hand Styracosaurus Others are less easy toThis is a replica of the right hand of Tyrannosaurus rex. When Tyrannosaurus rex was first discovered, the humerus was the only element of the forelimb known. For the initial mounted skeleton as seen by the public in 1915, Osborn substituted longer, three fingered forelimbs like those of Allosaurus. However, a year earlier, Lawrence Lambe described the short, two fingered forelimbs of the closely related Gorgosaurus. This strongly suggested that