Exquisite fossils of Cretaceous shark solve mystery of how i

Six full-body fossils of Ptychodus sharks have been formally analysed for the first time, revealing that they were fast swimmers that preyed on shelled creatures

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France , Mexico , Rennes , Bretagne , Romain Vullo , University Of Rennes , University Of London , Wild Life , Charles Underwood , Animals , Fish , Palaeontology , Fossils , Sharks ,