Tyrannosaurus rex, juvenile tooth with root Dilophosaurus These panels are made of

These panels are made of sturdy lightweight fiberglass

Solid crests have only been found on large

but probably recovered from the Gobi Desert

In the later Adena period

Hell Creek Formation of southern North Dakota

Tyrannosaurus rex, juvenile tooth with root Dilophosaurus These panels are made ofTyrannosaurs rex Tooth The original tooth was found in the Hell Creek Formation of South Dakota and is 5. 5 inches long. It is from a juvenile Trex. The tooth has been flattened by the fossilization process. Yes, T rex teeth were big and strong but they did break them while feeding and crushing the bones of other dinosaurs. These broken teeth are called shed teeth. Fortunately, when a tooth was broken or shed it was slowly replaced by another tooth