Tyrannosaurus rex, juvenile tooth with root Oviraptor are ocean dwelling creatures that

are ocean dwelling creatures that live their lives attached to the sea floor

The authors of the paper describing Ida classified her as a member of the primate family Notharctidae and the superfamily Cercamoniidae

Charnia is a highly significant fossil for several reasons

and hinged body shields

Tyrannosaurus rex, juvenile tooth with root Oviraptor are ocean dwelling creatures thatTyrannosaurs 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