Cephalopod genera

redirect giant squid

largest genus of octopuses

genus of molluscs

Loligo is a genus of squid and one of the most representative and widely distributed groups of myopsid squid.

genus of Cephalopoda

Eledone is a genus of octopuses forming the only genus in the family Eledonidae. It is mainly distributed in the northern and southern Atlantic Ocean, with one species, E. palari, described from the southwestern Pacific Ocean and eastern Indian Ocean in waters around Indonesia and Australia and another, E. microsicya, from the western Indian Ocean. One species, E. thysanophora, is now regarded as a synonym of the brush-tipped octopus (Eledone schultzei).

Onychoteuthis is a genus of squid in the family Onychoteuthidae. The type species is Onychoteuthis bergii. While the genus is found worldwide in tropical and subtropical oceans, they can also occur in the North Pacific Ocean. There were previously considered to be four species in the genus but there are now considered to be roughly 10. These squid are frequently observed in the surface waters at night and they are often caught using dipnet at nightlight stations. The young squid are usually the only specimens captured using standard midwater trawls, the older squid are apparently able to avoid

Ascarosepion is a genus of cuttlefish inhabiting the coastal regions of the Indian Ocean and East Pacific (comprising part of the Indo-Pacific region). The genus varies wildly in size, from the two species of small, colorful cuttlefish formerly classified in the genus Metasepia, to the largest species of extant cuttlefish, the giant cuttlefish.

Todarodes is a genus of flying squid from the subfamily Todarodinae, of which it is the type genus. The genus contains five species which are partially allopatric but between them their distributions encompass most of the world's oceans and seas. These squid have a funnel groove with foveola, a hectocotylised fourth arm and tentacular stalks which lack free trabeculae.

Thysanoteuthis is a genus of large squid comprising one well-known species, the diamond squid, and two dubious taxa.

thumb|Abralia astrosticta

Bathypolypus is a genus of octopuses in the monotypic family Bathypolypodidae.

Euprymna is a genus of bobtail squid comprising a number of species.

Rossia is a genus of 10 species of benthic bobtail squid in the family Sepioidae found in all oceans. They live at depths greater than 50 m (164 ft) and can grow up to 9 cm (3.5 in.) in mantle length. This genus was first discovered in 1832 by Sir John Ross and his nephew James Clark Ross in the Arctic Seas, showing a resemblance to another genus under the same family, Sepiola. After returning from their expedition, Sir Richard Owen officially classified Rossia to be a new genus, naming it after Sir John and James Clark Ross.

Sepiola is a genus of bobtail squid comprising 10 species:

Amphitretus is a genus of pelagic gelatinous octopuses. It is the sole genus of subfamily Amphitretinae, one of three subfamilies in the family Amphitretidae and consists of two species. Some authorities consider Amphitretus thielei as a subspecies of Amphitretus pelagicus, which would make the genus monotypic.

Illex, commonly known as shortfin squids, is a genus of squid in the family Ommastrephidae and the only member of the subfamily Illicinae. It contains four species: Illex argentinus, Argentine shortfin squid Illex coindetii, southern shortfin squid Illex illecebrosus, northern shortfin squid Illex oxygonius, sharptail shortfin squid

Lycoteuthis is a genus containing two species of squid: Lycoteuthis springeri and Lycoteuthis lorigera. They are small animals which grow up to in length.

Mastigoteuthis is a genus of whip-lash squid containing at least seven valid species. Some teuthologists consider Idioteuthis synonymous with this taxon.

Sepioloidea is a genus of cephalopods comprising five species.

Vitreledonella is a genus of mesopelagic octopods from the family Amphitretidae which contains two species, one of which is the glass octopus.

Alloteuthis is a genus of squids from the pencil squid family Loliginidae which has been considered a subgenus of the genus Loligo but both molecular analyses and morphological-anatomical analyses support the separation of these two taxa.

Idiosepius is a genus of squids in the family Idiosepiidae. Most well known for their incredibly tiny size, these squids range from 10 to 18 mm (0.39 to 0.75 in) in adult specimens. Members of this genus are of no interest to commercial fisheries. Idiosepius are found primarily in tropical and temperate waters throughout the Indo-Pacific, often found in association with seagrass and mangrove roots.

Sepiella is a genus of cuttlefish encompassing around seven species.

Graneledone is a genus of octopuses in the family Octopodidae. The type species is Eledone verrucosa Verrill, 1881.

Sthenoteuthis is a genus of small squids, with two species, part of the subfamily Ommastrephinae within the family Ommastrephidae, the "flying squids". They are the dominant species of flying squid in the world's tropical and subtropical seas and they are commonly seen at the ocean's surface during the night. Mantle lengths of .

Heteroteuthis is a genus of deep-sea bobtail squid comprising seven species.

Austrorossia is a genus of bobtail squid encompassing five species.

Berryteuthis is a genus of squid in the family Gonatidae, comprising two known species. The two members differ greatly in size, with B. anonychus and B. magister reaching mature mantle lengths of and respectively. In both members, photophores are absent.

Gonatus is a genus of squid in the family Gonatidae, comprising twelve species, and therefore containing the most species in the family. Adult squid belonging to species in this genus are notable for their lack of tentacles.

Lolliguncula is a genus of squid from the family Loliginidae from the eastern Pacific and western Atlantic, known as brief squid. The genus is divided into two subgenera Lolliguncula and Loliolopsis. They are rather small squids with a maximum mantle length of 120mm, that inhabit shallow warm seas, although some species have been recorded in areas of low salinity. They are typified by having a short mantle, which is round at the posterior; and fins that are broader than long, but which have no posterior lobes. The males produce spermatophores with a long cement body and they lack a ventral cre

Semirossia is a genus of bobtail squid comprising three species.

Loliolus is a genus of squid from the family Loliginidae from the Indo-Pacific region. The genus is divided into two subgenera Loliolus and Nipponololigo. They are small squids of less than in mantle length which have an expanded tentacular club. This club has 4 series of suckers. The sucker rings have plate-like teeth which are square in shape all around them. The males' hectocotylus has a ventral crest which is created by the fusion of the protective membrane with the ventral series of papillae and this crest completely obscures the conical shape of the papillae. The mantle is rounded poster

Bentheledone is a genus of octopuses in the family Megaleledonidae.

Abraliopsis is a marine genus of squid (family Enoploteuthidae) of the phylum Mollusca. Not much is known about Abraliopsis due to the evading ability of pelagic cephalopods. Features that distinguish these species include the absence of arm suckers, size and number of hooks on arms, the presence of photophores, and the formation and position of chromatophores. 11 species that make up the Enoploteuthidae family.

Helicocranchia is a genus of small glass squids from the family Cranchiidae, known as piglet squid. They are characterized by possessing a very large funnel and in having a pair of small paddle-like fins which are attached to a part of the gladius which sits above the muscular mantle. These squid undergo a slow descent starting near the surface as paralarvae moving down to lower mesopelagic depths as near-adults.

thumb | right | alt=Tropical bottletail squid (Sepiadanum kochi), Morotai, Indonesia | Tropical bottletail squid (Sepiadanum kochi), Morotai, Indonesia Sepiadarium is a genus of cephalopods comprising five species.

Neorossia is a genus of bobtail squid comprising two species.

Sepietta is a genus of bobtail squid comprising three species.

Robsonella is a small genus of octopuses in the family Octopodidae. It contains two described species. Robsonella octopuses can be found on the central-south coast of Chile. If an octopus’ first lateral tooth in the radula is crescent shaped; this allows you to identify it as a Robsonella fontaniana. One species in the genus, Robsonella fontaniana, inhabit the coastal waters of Chile and range from northern Peru to Golfo Nuevo in Argentina. Robsonella fontaniana are very small (under 50 mm mantle length), have rugged skin and each eye has a fleshy expansion.

Onykia is a genus of squids in the family Onychoteuthidae. Due to similarities between the genera, several recent authors consider the genus Moroteuthis a junior synonym of Onykia. The type species is Onykia carriboea, the tropical clubhook squid.

Uroteuthis is a genus of 14 species of common inshore squids of the Indo-West Pacific and is further subdivided into 3 subgenera. The members of the genus Uroteuthis are the only squids of the family Loliginidae that possess photophores (light-emitting organs) and all species in the genus have a pair of photophore organs on the ventral surface of their ink sac either side of their intestine.

Moroteuthopsis is a genus of squid in the family Onychoteuthidae. The type species is Moroteuthopsis ingens. Prior to 2018, Moroteuthopsis was considered a subgenus of Onykia; after the mitochondrial DNA of the family Onychoteuthidae was studied, "O." ingens was found to group together with Kondakovia, and the subgenus Moroteuthopsis was elevated to full genus status.

Pholidoteuthis is a genus of squid in the monotypic family Pholidoteuthidae, comprising at least two species. The defunct genus Tetronychoteuthis was previously incorporated into Pholidoteuthidae based upon a singular taxon known as Tetronychoteuthis massyae. Following the discovery of Pholidoteuthis boschmai in 1950, T. massaye was placed into Pholidoteuthis, with Tetronoychoteuthis considered a nomen dubium. P. boschmai is now considered a junior synonym of P. massyae.

Muusoctopus is a cosmopolitan genus of deep-sea octopus from the family Enteroctopodidae. These are small to medium-sized octopuses which lack an ink sac. Recent work has suggested that these octopuses originated in the North Atlantic and subsequently moved into the North Pacific while the species in the Southern Hemisphere are descended from multiple invasions from northern oceans.

Ornithoteuthis is a small genus of squid, with two species, from the family Ommastrephidae, the "flying squids", the two species in this genus are known as "bird squids". They are relatively small squid, with mantle lengths of around , highly agile and rather uncommon. Their characteristics that distinguish then from other members of the subfamily Ommastrephinae are that their mantle and fins are drawn out into a narrow tail and that they have a luminous stripe along their midline on the viscera.

Taningia is a genus of squid, one of the two referred to as octopus squid (family Octopoteuthidae), the other being Octopoteuthis, its sister genus. Both Octopoteuthis and Taningia are characterized by their lack of tentacles for the majority of their life cycle, which led to their common name.

Paroctopus is a small genus of octopuses from the family Octopodidae.

Iridoteuthis is a genus of bobtail squid comprising three species. They belong to the subfamily Heteroteuthinae of the family Sepiolidae.

Scaeurgus is a genus of octopuses in the family Octopodidae. The species of this genus are characterized by inhabiting the upper bathyal benthic zone from temperate and tropical latitudes in all major oceans.

Liguriella is a genus of glass squids, the genus is probably monotypic, the only species being Liguriella podophthalma. The other named species Liguriella pardus, which was described by S. Stillman Berry in 1916, is cited as a taxon inquirendum but it is suggested that there may be in fact more than one species and there are species yet to be described.

Galiteuthis is a genus of glass squids from the family Cranchiidae and the subfamily Taoniinae. Squids in the genus Galiteuthis are large squids with mantle lengths measuring up to , although it has been suggested that mantle length could reach as much as . The most distinctive feature of the species in this genus are they have hooks on the tentacular clubs while there are no hooks on the arms, and by their long, thin, terminal fins.

Brachioteuthis is a genus of squid comprising six species which are circumglobally distributed. Members of this genus have a generally small (6-14 cm) mantle length.

Inioteuthis is a genus of bobtail squid comprising two species.

thumb | right | alt=Image of Abdopus on the sea floor. | Image of Abdopus on the sea floor. Abdopus is a genus of octopuses in the family Octopodidae.

Opisthoteuthis, from Ancient Greek ὄπισθεν (ópisthen), meaning "back", and τευθίς (teuthís), meaning "squid", is a genus of cirrate octopuses, sometimes known as flapjack octopuses, which are found in all the world's oceans.

Teretoctopus is a genus of octopuses in the family Octopodidae.

Pteroctopus is a genus of octopuses in the family Octopodidae.

Euaxoctopus is a genus of octopuses in the family Octopodidae.

Taonius is a small genus of glass squid. Although it comprises only three recognised species, it has been suggested there may be as many as five species. Taonius borealis is found in the North Pacific Ocean and Taonius pavo is found in the Atlantic and possibly the south-western Indian Ocean.