Ornatocephalus, Messel Lizard Kentrosaurus New teeth are continually grown

New teeth are continually grown in a groove in the shark’s mouth and the skin acts as a “conveyor belt” to move the teeth forward into new positions

other scientists took issue with the study's methods

Jefferson thought they were the claws of a giant cat

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Desmoinesian Stage (= Westphalian D)

Ornatocephalus, Messel Lizard Kentrosaurus New teeth are continually grownOrnatocephalus was a terrestrial lizard with a prehensile tail. Because most lizards are terrestrial they are found less often than aquatic reptiles. Only twelve species of lizards from a few dozen specimens found at Messel have been described so far (making this a truly rare find). Among those identified so far are: iguanas, lacertids, skinks, glass lizards and monitors. The prehensile tail and other characteristics of the arboreal, large headed