Spinosaurus Tooth Dilophosaurus More than 1/2 billion years

More than 1/2 billion years old

The similar sized Megatherium genus was from South America

and is made to disassemble into halves

The sandstones and shale of the Front Range were an ideal medium for the preservation of dinosaur and other tracks

Spinosaurus Tooth Dilophosaurus More than 1/2 billion yearsLarger than T. rex, this intimidating meat eater is one of the lost dinosaur of Egypt. Spinosaurus was first discovered in the early 1900's by German paleontologist Ernst von Stromer. During the second World War, Allied bombs inadvertently destroyed the only significant remains of the sail backed predator. Today, Spinosaurus is only known from a few bones wrestled from the Sahara over the last hundred years. Despite the great desert's unwillingness to