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  1. Coleoidea - Wikipedia

  2. Anatomy and evolution of the first Coleoidea in the Carboniferous

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    There is a consensus that the Coleoidea derived from the Bactritida either in the Early Devonian 20, 54 or in the Early Carboniferous 1. This is relevant because the Bactritida were supposedly ectocochleate while the endocochleate state is one of the most important autapomorphies (apart from the ink sac) of coleoids.
    Coleoids have an internal shell (sometimes absent), 8 or 10 circumoral appendages, and a pair of ctenidia ( Jereb et al., 2010, Hanlon et al., 2018 ). These cephalopods have a wide distribution in all oceans – from the poles to the tropics – on continental margins and in oceanic areas ( Hanlon and Messenger, 1996, Jereb and Roper, 2005 ).
    There are two major extant groups of coleoids ( Decapodiformes and Octopodiformes ), and one major extinct group ( Belemnitida, the belemnites ). Coleoids differ significantly from nautiloids, ammonoids, and other extinct cephalopod groups in several respects. Perhaps most importantly, they lack external shells.
    Our divergence time estimation suggests that coleoids originated in the Mesozoic Era (Middle Triassic) and that both main clades (Decapodiformes and Octopodiformes) diverged in the Cretaceous/Jurassic Period.
  4. 2.4 Coleoidea - Digital Atlas of Ancient Life

    WEBWith the exception of the lone-surviving nautiloids ( Nautilus and Allonautilus ), all living cephalopods--including squids, cuttlefish, and octopuses--belong to the subclass Coleoidea, a truly remarkable animal …

  5. Belemnieten uit Jura en Krijt op Nederlands grondgebied

  6. Mesozoic origin of coleoid cephalopods and their abrupt shifts of ...

  7. The gladiuses in coleoid cephalopods: homology, parallelism, or ...

  8. Mollusca: Cephalopoda: Coleoidea - University of California …

  9. Systematics of Cephalopods | SpringerLink

  10. Coleoidea - Wikiwand