9242251f_Onychoteuthidae__Marginal_suckers_on_manus
[Genus] Onychoteuthis [Photophores] Two intestinal*, one or two on each eye [Secondary occipital folds] Six to ten [Structure of mantle epidermis] Smooth [Fins] Rhombic [Terminal pad suckers] 9–18 [Rachidian] Variably unicuspid or tricuspid [Marginal suckers on manus] 
Absent at maturity
Onychoteuthidae
Marginal suckers on manus