"Ancient sea cow attacked by a crocodile and sharks" Topic
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| Tango01 | 14 Jun 2025 9:53 p.m. PST |
… sheds new light on prehistoric food chains "Predation marks in the skull indicate that the dugongine sea cow, belonging to the extinct genus Culebratherium, was first attacked by the ancient crocodile and then scavenged by a tiger shark (Galeocerdo aduncus) in what is now northwestern Venezuela. "Conspicuous" deep tooth impacts concentrated on the sea cow's snout, suggest the crocodile first tried to grasp its prey by the snout in an attempt to suffocate it. Two further large incisions, with a round starting impact, demonstrate the crocodile then dragged the sea cow, followed by tearing it. Marks on the fossils with striations and slashing, indicate the crocodile likely then executed a 'death roll' while grasping its prey -- a behaviour commonly observed in modern crocodiles…"
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discusses the limitations and challenges of working with a low-end 3Dprinter.
