Two Endoceras giganteum forage on the seafloor, while a hapless Isotelus gigas gets a little too close. Art by Prehistorica, reproduced here with permission. The orthoceratoid Endoceras is the both the longest extinct cephalopod and largest Paleozoic invertebrate. A shell of E. giganteum (MCZ unnumbered) from the Late Ordovician of New York is the current record-holding specimen. As … Continue reading Reconstructing fossil cephalopods: Endoceras
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