Article Dans Une Revue Swiss Journal of Palaeontology Année : 2023

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

Résumé

Abstract 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.

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Dates et versions

hal-04374384 , version 1 (05-01-2024)

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Christian Klug, René Hoffmann, Helmut Tischlinger, Dirk Fuchs, Alexander Pohle, et al.. ‘Arm brains’ (axial nerves) of Jurassic coleoids and the evolution of coleoid neuroanatomy. Swiss Journal of Palaeontology, 2023, 142 (1), pp.22. ⟨10.1186/s13358-023-00285-3⟩. ⟨hal-04374384⟩
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