CYCLOTEUTHOIDEA NAEF, 1923

Fernández-Álvarez, Fernando Á, Taite, Morag, Vecchione, Michael, Villanueva, Roger & Allcock, A Louise, 2022, A phylogenomic look into the systematics of oceanic squids (order Oegopsida), Zoological Journal of the Linnean Society 194 (4), pp. 1212-1235 : 1227

SUPERFAMILY CYCLOTEUTHOIDEA NAEF, 1923

(11 SPECIES)

Diagnosis: Small to medium adult-sized Oegopsida with buccal connectives attached to the ventral borders of ventral arms; with two series of arm suckers; tentacles with carpal locking apparatus and a broad dorsal keel; manus suckers usually with a large stalk, with three or four series of suckers on the dactylus; terminal pad with dispersed suckers at the end of the tentacle club; gladius with a secondary conus or without a conus.

Remarks: The sister-group relationship between the families Brachioteuthidae and Cycloteuthidae is strongly supported in our phylogenetic analyses, as in the study by Lindgren (2010). However, the morphological similarities between the two families are few and mostly related to the morphology of the tentacle club. The remaining morphological similarities (number of arm sucker series, presence of a tentacle carpal locking apparatus) most probably represent plesiomorphic characters of Oegopsida . The three analysed species also share the oegopsid plesiomorphic position for trnM and trnI.