The Cycloteuthidae are a
family
Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...
in the order
Oegopsida
Oegopsida is one of the two orders of squid in the superorder Decapodiformes, in the class Cephalopoda. Together with the Myopsina, it was formerly considered to be a suborder of the order Teuthida, in which case it was known as Oegopsina. This ...
, comprising two
genera. While physically dissimilar, molecular evidence supports the relatedness of the genera. The family is found primarily in
mesopelagic
The mesopelagic zone (Greek μέσον, middle), also known as the middle pelagic or twilight zone, is the part of the pelagic zone that lies between the photic epipelagic and the aphotic bathypelagic zones. It is defined by light, and begins at ...
tropical
The tropics are the regions of Earth surrounding the Equator. They are defined in latitude by the Tropic of Cancer in the Northern Hemisphere at N and the Tropic of Capricorn in
the Southern Hemisphere at S. The tropics are also referred to ...
to
subtropical waters. Cycloteuthidae are characterised by a triangular
funnel locking apparatus.
Species
*Genus ''
Cycloteuthis''
**''
Cycloteuthis akimushkini'' *
**''
Cycloteuthis sirventi'' *
*Genus ''
Discoteuthis
''Discoteuthis'' is a genus of squid in the family Cycloteuthidae. It is distinguished from the genus '' Cycloteuthis'' by the absence of a tail on the mantle. The genus occurs in tropical
The tropics are the regions of Earth surrounding ...
''
**''
Discoteuthis discus'' *
**''
Discoteuthis laciniosa''
**
''Discoteuthis'' sp. A *
**
''Discoteuthis'' sp. B
The entries listed above with an asterisk (*) are questionable and need further study to determine if they are valid or synonyms.
References
External links
Tree of Life web project: Cycloteuthidae
Squid
Cephalopod families
Taxa named by Adolf Naef
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