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Adaptations to squid-style high-speed swimming in Jurassic belemnitids
Klug, C.; Schweigert, G.; Fuchs, D.; Kruta, I.; Tischlinger, H. (2015). Adaptations to squid-style high-speed swimming in Jurassic belemnitids. Biol. Lett. 12(1): 5 pp.
In: Biology Letters. Royal Society Publishing: London. ISSN 1744-9561; e-ISSN 1744-957X, more
Peer reviewed article  

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Author keywords
    Coleoidea; Decabrachia; Belemnitida; Jurassic; phylogeny; nekton

Authors  Top 
  • Klug, C.
  • Schweigert, G.
  • Fuchs, D.
  • Kruta, I.
  • Tischlinger, H.

    Although the calcitic hard parts of belemnites (extinct Coleoidea) are very abundant fossils, their soft parts are hardly known and their mode of life is debated. New fossils of the Jurassic belemnitid Acanthoteuthis provided supplementary anatomical data on the fins, nuchal cartilage, collar complex, statoliths, hyponome and radula. These data yielded evidence of their pelagic habitat, their nektonic habit and high swimming velocities. The new morphological characters were included in a cladistic analysis, which confirms the position of the Belemnitida in the stem of Decabrachia (Decapodiformes).

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