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Found this tooth in Aurora, NC. Can anyone confirm identification as to which sub-species of Sand Tiger shark that it belongs. I am leaning towards Palaeohypotodus rutoti. Thanks for your assistance.
Palaeohypotodus is a genus found in the Palaeocene to the Early Eocene. Teeth from Aurora are primarily middle Miocene with the occasional early Pliocene tooth mixed in. What you have is a posterior Odontaspis reticulata. You were probably put off by the rugose basal enamel striations on the labial side where the enamel meets the root. In my modern Carcharias jaws and my modern Odontaspis jaw, the posterior teeth have heavy basal rugose enamel striations even as the lateral and anterior teeth do not.
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