These are cephalpods with internal shell such as soft-bodied squids, cuttlefish, and octopus. They, along with Nautilus, are the only extant (living) cephalopods.
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Frequently used abbreviations: NPL Non-vertebrate Paleontology Laboratory | TNSC Texas Natural Science Center | UTDGS Department of Geological Sciences | BEG Bureau of Economic Geology | VPL Vertebrate Paleontology Laboratory | JSG Jackson School of Geosciences |
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