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Carcharocles chubutensis
''Carcharocles chubutensis'', meaning "glorious shark of Chubut", from Ancient Greek: κλέϝος (kléwos) “glory/fame” + καρχαρίας (karkharías) “shark”, is a prehistoric megatoothed shark that lived during Oligocene, Miocene, and Pliocene epochs, approximately 28 – 5 million years ago. This shark is considered to be a close relative of another prehistoric megatoothed shark, ''C. megalodon''.〔 However, as is the case with ''C. megalodon'', the classification of this species is disputed.
==Fossil record==
This species is also known from fossil teeth and some fossilized vertebral centra. Shark skeleton is composed of cartilage and not bone, and cartilage rarely gets fossilized. Hence, fossils of ''C. chubutensis'' are generally poorly preserved. Although the teeth of ''C. chubutensis'' are morphologically similar to teeth of ''C. megalodon'', they are comparatively slender with curved crown, and with presence of lateral heels feebly serrated. Fossils of this species have been found in North America,〔 South America,〔 Cuba, Puerto Rico, Africa, and Europe.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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