Ceratopsids

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The ceratopsids were herbivores, characterized by large bony collars, armed with large bony horns. These dinosaurs are often found in association with hadrosaurs suggesting that they may have had similar habits. Shown here is Triceratops called so for obvious reasons. The head shield, thought originally to be a defensive weapon, is now thought, because of the extensive vascularization evident as vessel channels on the surface of the bony shield, to have been involved in thermoregulation.

Click here to see a Ceratopsid in action (avi format 2.4 meg),