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| image = Octopus vulgaris 2.jpg | image_caption = ''Octopus vulgaris'' | authority = Berthold & Engeser, 1987〔 | subdivision_ranks = Subgroups | subdivision = See text. | synonyms = }} Octopodiformes is a superorder of the subclass Coleoidea, comprising the octopuses and the vampire squid. All members of Octopodiformes have eight arms. ==Classification== *Class Cephalopoda * *Subclass Nautiloidea: nautilus * *Subclass †Ammonoidea: ammonites * *Subclass Coleoidea * * *Superorder Decapodiformes: squid, cuttlefish * * *Superorder Octopodiformes * * * *Family †Trachyteuthididae (''incertae sedis'') * * * *Order Vampyromorphida: vampire squid * * * *Order Octopoda * * * * * Genus †''Keuppia'' (''incertae sedis'') * * * * * Genus †''Palaeoctopus'' (''incertae sedis'') * * * * * Genus †''Paleocirroteuthis'' (''incertae sedis'') * * * * * Genus †''Pohlsepia'' (''incertae sedis'') * * * * * Genus †''Proteroctopus'' (''incertae sedis'') * * * * * Genus †''Styletoctopus'' (''incertae sedis'') * * * * *Suborder Cirrina: finned deep-sea octopus * * * * * *Family Opisthoteuthidae: umbrella octopus * * * * * *Family Cirroteuthidae * * * * * *Family Stauroteuthidae * * * * *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 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Octopodiformes」の詳細全文を読む スポンサード リンク
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