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Dental pavement of closely packed rows of self sharpening teeth from the largest of the Hadrosaurs
Andiva and Ovatoscutum
The slate is mainly used for floor slabs and table tops
The animals had a canteen-shaped body armor
Didymoceras cheyennense & Baculites compressus Ammonite/Cephalopods Baryonyx Dental pavement of closely packedThis authentic fossil specimen is from the Pierre Shale (Lower Cretaceous) and was found near the town of Central, South Dakota. Didymoceras is an extinct genus of ammonite cephalopod. It is one of the most bizarrely shaped genera, with a shell that spirals upwards into a loose, hooked tip. It is thought to have drifted in the water vertically, moving up and down. The generic name is Latin for "paired horns". Baculites ("walking stick rock") is an