‘Arm brains’ (axial nerves) of Jurassic coleoids and the evolution of coleoid neuroanatomy

Swiss Journal of Palaeontology - Tập 142 - Trang 1-22 - 2023
Christian Klug1, René Hoffmann2, Helmut Tischlinger3,4, Dirk Fuchs5, Alexander Pohle1,2, Alison Rowe6, Isabelle Rouget6, Isabelle Kruta6
1Paläontologisches Institut und Museum, Universität Zürich, Zurich, Switzerland
2Institute of Geology, Mineralogy, & Geophysics, Ruhr-Universität Bochum, Bochum, Germany
3Stammham, Germany
4Jura-Museum Eichstätt, Willibaldsburg, Eichstätt, Germany
5SNSB-Bayerische Staatssammlung für Paläontologie Und Geologie, Munich, Germany
6Centre de recherche en paléontologie - Paris, Sorbonne Université-MNHN-CNRS-CR2P, Paris, France

Tóm tắt

Although patchy, the fossil record of coleoids bears a wealth of information on their soft part anatomy. Here, we describe remains of the axial nerve cord from both decabrachian (Acanthoteuthis, Belemnotheutis, Chondroteuthis) and octobrachian (Plesioteuthis, Proteroctopus, Vampyronassa) coleoids from the Jurassic. We discuss some hypotheses reflecting on possible evolutionary drivers behind the neuroanatomical differentiation of the coleoid arm crown. We also propose some hypotheses on potential links between habitat depth, mode of life and the evolution of the Coleoidea.

Tài liệu tham khảo

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