Incirrina

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Incirrina
Wunderpus photogenicus
Scientific classification
Kingdom: Animalia Phylum: Mollusca Class: Cephalopoda Order: Octopoda Suborder: Incirrina Grimpe, 1916 sensu Felley et al., 2001
Families
Amphitretidae Bolitaenidae Octopodidae Vitreledonellidae Superfamily Argonautoida Alloposidae Argonautidae Ocythoidae Tremoctopodidae
Synonyms
Incirrata Grimpe, 1916

Incirrina is a suborder of the order Octopoda. The suborder contains the classic "benthic octopuses," as well as many pelagic octopus families, including the paper nautiluses. The incirrate octopuses are distinguished from the cirrate octopuses by the absence in the former of the "cirri" filaments found with the suckers that the cirrates are named for, as well as no paired swimming fins on the head, and a lack of a small internal shell (the "shell" of Argonauta species is not a true shell, but a thin calcite egg case).

[edit] Classification

• CLASS CEPHALOPODA
  • Subclass Nautiloidea: nautilus
  • Subclass †Ammonoidea: ammonites
  • Subclass Coleoidea
    • Superorder Decapodiformes: squid, cuttlefish
    • Superorder Octopodiformes
      • Order Vampyromorphida: Vampire Squid
      • Order Octopoda
        • Genus †Pohlsepia (incertae sedis)
        • Genus †Proteroctopus (incertae sedis)
        • Genus †Palaeoctopus (incertae sedis)
        • Suborder Cirrina: finned deep-sea octopus
        • Suborder Incirrina
          • Family Amphitretidae: telescope octopus
          • Family Bolitaenidae: gelatinous octopus
          • Family Octopodidae: benthic octopus
          • Family Vitreledonellidae: Glass Octopus
          • Superfamily Argonautoida
            • Family Alloposidae: Seven-arm Octopus
            • Family Argonautidae: argonauts
            • Family Ocythoidae: Tuberculate Pelagic Octopus
            • Family Tremoctopodidae: blanket octopus