Cycloteuthoidea

The Cycloteuthidae are a family in the order Oegopsida, comprising two genera. While physically dissimilar, molecular evidence supports the relatedness of the genera. The family is found primarily in mesopelagic tropical to subtropical waters. Cycloteuthidae are characterised by a triangular funnel locking apparatus.

Brachioteuthidae is a family of squid containing two genera and around seven species. They are muscular, but rather thin squids with a ML up to ~20 cm. The tentacle club is unique in this family in that the dactylus is normal (usually 3-4 sucker series), while the manus is greatly expanded with numerous small suckers on stalks. Many species show very little differentiation between the carpus, manus, and the dactylus.

Cycloteuthoidea is a superfamily of squid in the order Oegopsida.