First Middle–Late Jurassic gladius vestiges provide new evidence on the detailed origin of incirrate and cirrate octopuses (Coleoidea)

@article{Fuchs2018FirstMJ,
  title={First Middle–Late Jurassic gladius vestiges provide new evidence on the detailed origin of incirrate and cirrate octopuses (Coleoidea)},
  author={Dirk Fuchs and G{\"u}nter Schweigert},
  journal={PalZ},
  year={2018},
  volume={92},
  pages={203-217}
}
Limpet-like and non-mineralized fossils from the upper Kimmeridgian Nusplingen Plattenkalk are identified as internal shells of coleoid cephalopods, more specifically as octobrachian gladii. The significantly reduced median field provokes us to consider this new gladius type to be shorter than the mantle length. It is consequently seen as a vestigial gladius. The first recognition of an unpaired gladius vestige in the fossil record sheds new light on the evolutionary history of the gladius… Expand
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  • Proceedings of the Geologists' Association
  • 2019
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