Fossil shark tooth

Numéro d’image : 11743764
Fossil shark tooth
Fossil shark tooth (Squalicorax kaupi). Example of the tooth of this Late Cretaceous (100-75 mya) Crow Shark. The serrated,asymmetric,broad shape of the tooth and some fossil evidence indicates a broad-spectrum diet of marine animals,bony fish and turtles. There is also some evidence of them scavenging the bodies of large dinosaurs that ended up in the sea. Sharks first evolved in the Palaeozoic era (570-245 million years ago). Shark's skeletons are formed of cartilage,a less durable material than bone,consequently there are few fossils of prehistoric sharks. Their teeth are made of a bone-like,enamel-coated substance that is more readily fossilised
Licence : Droits gérés
Crédit: Science Photo Library / Kidd, Geoff
Taille de l’image : 2709 px × 4064 px
Model Release : Non requis
Property Release : Non requis
Restrictions : -

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