Argonautoidea

	Argonautoidea Argonautoidea is a superfamily of the sub order Incirrata containing all known argonautoids. Classification Class Cephalopoda Subclass Nautiloidea: nautiluses Subclass †Ammonoidea: ammonites Subclass Coleoidea Superorder Decapodiformes: squid, cuttlefish Superorder Octopodiformes *Family † Trachyteuthididae (''incertae sedis'') Order Vampyromorphida: vampire squid Order Octopoda *Genus †''Keuppia'' (''incertae sedis'') *Genus †''Palaeoctopus'' (''incertae sedis'') *Genus †'' Paleocirroteuthis'' (''incertae sedis'') *Genus †''Proteroctopus'' (''incertae sedis'') *Genus †'' Styletoctopus'' (''incertae sedis'') *Suborder Cirrina: finned deep-sea octopuses *Suborder Incirrata **Superfamily Argonautoidea ***Family Alloposidae: the seven-arm octopus ***Family Argonautidae: argonauts (paper nautiluses) ***Family Ocythoidae: the tuberculate pelagic octopus ***Family Tremoctopodidae: blanket octopu ... [...More Info...] [...Related Items...] OR:** [Wikipedia] [Google] [Baidu]
	Ocythoidae ''Ocythoe tuberculata'', also known as the tuberculate pelagic octopus or football octopus, is a pelagic octopus. It is the only known species in the family Ocythoidae. ''Ocythoe tuberculata'' is found in warm and temperate seas, especially in the Northern Hemisphere, such as the North Pacific Ocean off California. Description Morphology ''Ocythoe'' are one of the few cephalopods to have a swimbladder. In captivity, two specimens were observed controlling their buoyancy and shooting water "forwards, upwards, sideways, and backwards" from the upper channel of the mantle cavity. ''Ocythoe'' achieves this by altering the dorso-lateral corners of the mantle opening. The entire swimbladder structure rests on the "visceral mass" and connects to the mantle cavity. It is also innervated and vascular. Juvenile and adult swimbladders exhibit key differences. Juveniles tend to have thicker and "gelatinous" walls with more spherical cells. Adults on the other hand have a less gelatino ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Incirrata Incirrata (or Incirrina) is a suborder of the order Octopoda. The suborder contains the classic " benthic octopuses," as well as many pelagic octopus families, including the paper nautiluses. The incirrate octopuses are distinguished from the cirrate octopuses by the absence in the former of the "cirri" filaments (found with the suckers) for which the cirrates are named, as well as by the lack of paired swimming fins on the head, and lack of a small internal shell (the "shell" of '' Argonauta'' species is not a true shell, but a thin calcite egg case). Classification CLASS CEPHALOPODA Subclass Nautiloidea: nautilus Subclass †Ammonoidea: ammonites Subclass Coleoidea Superorder Decapodiformes: squid, cuttlefish Superorder Octopodiformes *Family † Trachyteuthididae (''incertae sedis'') Order Vampyromorphida: vampire squid Order Octopoda *Genus †''Keuppia'' (''incertae sedis'') *Genus †''Palaeoctopus'' (''incertae sedis'') *Genus †' ... [...More Info...] [...Related Items...] OR:** [Wikipedia] [Google] [Baidu]
	Ocythoe Tuberculata ''Ocythoe tuberculata'', also known as the tuberculate pelagic octopus or football octopus, is a pelagic octopus. It is the only known species in the family Ocythoidae. ''Ocythoe tuberculata'' is found in warm and temperate seas, especially in the Northern Hemisphere, such as the North Pacific Ocean off California. Description Morphology ''Ocythoe'' are one of the few cephalopods to have a swimbladder. In captivity, two specimens were observed controlling their buoyancy and shooting water "forwards, upwards, sideways, and backwards" from the upper channel of the mantle cavity. ''Ocythoe'' achieves this by altering the dorso-lateral corners of the mantle opening. The entire swimbladder structure rests on the "visceral mass" and connects to the mantle cavity. It is also innervated and vascular. Juvenile and adult swimbladders exhibit key differences. Juveniles tend to have thicker and "gelatinous" walls with more spherical cells. Adults on the other hand have a less gelatino ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Haliphron Atlanticus The seven-arm octopus (''Haliphron atlanticus'') is one of the two largest known species of octopus; based on scientific records, it has a maximum estimated total length of and mass of . The only other similarly large extant species is the giant Pacific octopus, ''Enteroctopus dofleini''. The genera ''Alloposina'' Grimpe, 1922, ''Alloposus'' Verrill, 1880 and ''Heptopus'' Joubin, 1929 are junior synonyms of ''Haliphron'', a monotypic genus in the monotypic family Alloposidae, part of the superfamily Argonautoidea in the suborder Incirrata of the order Octopoda. Description The seven-arm octopus is so named because in males, the hectocotylus (a specially modified arm used in egg fertilization) is coiled in a sac beneath the right eye. Due to this species' thick, gelatinous tissue, the arm is easily overlooked, giving the appearance of just seven arms. However, like other octopuses, it actually has eight. Distribution The type specimen of ''H. atlanticus'' was collected in t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Octopodiformes Octopodiformes is a superorder of the subclass Coleoidea, comprising the octopuses and the vampire squid. All living members of Octopodiformes have eight arms, either lacking the two tentacles of squid (as is the case in octopuses) or modifying the tentacles into thin filaments (as in vampire squid). Octopodiformes is often considered the crown group of octopuses and vampire squids, including all descendants of their common ancestor. Some authors use the term Vampyropoda for the same general category, though others use "Vampyropoda" to refer to the total group (all cephalopods closer to octopods than to true squid). Another term is Octobranchia, referring to cephalopods without prominent tentacles. '' Pohlsepia'', originally described as earliest octopod is considered as dubious for this group in later study. The oldest unambiguous vampyropod is '' Syllipsimopodi'', a squid-like cephalopod from the Mississippian-age Bear Gulch Lagerstätte of Montana. ''Syllipsimopodi'' has a co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Alloposidae The seven-arm octopus (''Haliphron atlanticus'') is one of the two largest known species of octopus; based on scientific records, it has a maximum estimated total length of and mass of . The only other similarly large extant species is the giant Pacific octopus, ''Enteroctopus dofleini''. The genera ''Alloposina'' Grimpe, 1922, ''Alloposus'' Verrill, 1880 and ''Heptopus'' Joubin, 1929 are junior synonyms of ''Haliphron'', a monotypic genus in the monotypic family Alloposidae, part of the superfamily Argonautoidea in the suborder Incirrata of the order Octopoda. Description The seven-arm octopus is so named because in males, the hectocotylus (a specially modified arm used in egg fertilization) is coiled in a sac beneath the right eye. Due to this species' thick, gelatinous tissue, the arm is easily overlooked, giving the appearance of just seven arms. However, like other octopuses, it actually has eight. Distribution The type specimen of ''H. atlanticus'' was collected in t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Octopodoidea Octopodoidea is a superfamily of the suborder Incirrata containing all extant octopods except for the cirrate octopodes, argonauts ( Alloposidae, Argonautidae, Ocythoidae and Tremoctopodidae), and the vampire squid. Families Octopus * Suborder Incirrina Superfamily Argonautoidea Superfamily Octopodoidea *Family Amphitretidae subfamily Bolitaeninae subfamily Vitreledonellinae Family Bathypolypodidae Family Eledonidae Family Enteroctopodidae Family Megaleledonidae Family Octopodidae The Octopodidae comprise the family containing the majority of known octopus species. Genera The World Register of Marine Species lists these genera: ''Abdopus'' Norman & Finn, 2001 ''Ameloctopus'' Norman, 1992 ''Amphioctopus'' P. Fischer, 1 ... References {{Taxonbar, from=Q20817899 Octopuses ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Tremoctopodidae ''Tremoctopus'' is a genus of pelagic cephalopods, containing four species that occupy surface to mid-waters in subtropical and tropical oceans. They are commonly known as blanket octopuses, in reference to the long, transparent webs that connect the dorsal and dorsolateral arms of the adult females. The other arms are much shorter and lack webbing. Description The common blanket octopus (''Tremoctopus violaceus'') exhibits one of the most extreme sexual size-dimorphism known in any animal near its size or larger. Females may reach in length, whereas the males are 2.4 cm (1 inch). The weight ratio is at least 10,000:1, and can probably reach as much as 40,000:1. The males have a large arm in a spherical pouch modified for mating, known as a hectocotylus. During mating, this arm is detached, and kept by the female in her mantle cavity until used for fertilisation. The male almost certainly dies shortly after mating. There is competition between the males; multiple male arm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Argonautidae The Argonautidae are a family of pelagic cephalopods that inhabit tropical and temperate oceans of the world. The family encompasses the modern paper nautiluses of the genus '' Argonauta'' along with several extinct genera of shelled octopods. Though argonauts are derived from benthic octopuses, they have evolved to depart the sea floor and live their life-cycle in the open seas. The family is characterised by brittle white shells constructed by the females, but which the dwarf male argonauts lack. These shells are primarily egg-cases, and are not attached to the body of the female. Paper nautiluses are often found washed up on beaches and are valued for their delicate beauty. The shell also plays the role of a buoyancy device, which the female controls by varying the amount of gulped air.Finn, Julian K., and Mark D. Norman. "The Argonaut Shell: Gas-mediated Buoyancy Control in a Pelagic Octopus." Proceedings: Biological Sciences 277, no. 1696 (2010): 2967-971. Accessed March 14 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Vampyromorphida Vampyromorphida is an order of cephalopods comprising one known extant species (''Vampyroteuthis infernalis'') and many extinct taxa. Physically, they somewhat resemble octopuses (their closest relatives), but the eight arms are united by a web of skin, and two smaller cilia are also present. Properly speaking, the vampire squid does not possess cilia, but cirri (cilia-like projections). Classification Order Vampyromorphida Suborder † Kelaenina Family †Muensterellidae Suborder † Prototeuthina *Family † Loligosepiidae Family † Geopeltididae Family † Lioteuthididae Family † Mastigophoridae Suborder † Mesoteuthina Family † Palaeololiginidae Subfamily † Teudopseinae Subfamily † Palaeololigininae Suborder Vampyromorphina *Family Vampyroteuthidae The following taxa were long considered to belong to Vampyromorphida, but this placement may be incorrect:Fischer, Jean-Claude & Riou, Bernard (2002): ''Vampyronassa rhodanica'' ... [...More Info...] [...Related Items...] OR:** [Wikipedia] [Google] [Baidu]
	Cirrina Cirrina or Cirrata is a suborder and one of the two main divisions of octopuses. Cirrate octopuses have a small, internal shell and two fins on their head, while their sister suborder Incirrina has neither. The fins of cirrate octopods are associated with a unique cartilage-like shell in a shell sac. In cross-section, the fins have distinct proximal and distal regions, both of which are covered by a thin surface sheath of muscle. The suborder is named for small, cilia-like strands (cirri) on the arms of the octopus, a pair for each sucker. These are thought to play some role in feeding, perhaps by creating currents of water that help bring food closer to the beak. Cirrate octopuses are noteworthy for lacking ink sacs. Phylogeny A molecular phylogeny based on mitochondrial and nuclear DNA marker sequences by Sanchez et al., 2018, shows that the Cirrina is paraphyletic, i.e. it is not a single clade. Instead, a clade containing Opisthoteuthidae and Cirroctopodidae is sister t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Styletoctopus ''Styletoctopus'' is an extinct genus of octopus. The genus consists of the single species ''Styletoctopus annae'', which lived approximately 95 million years ago. Very few octopus species appear in the fossil record, as octopuses consist of soft tissue that usually decomposes before it has time to fossilize.Rare fossil octopuses found NBC News, March 18, 2009 See also * 2009 extinct fossil octopus discoveries Arthropods Cephalopods Three new species of extinct Octopoda discovered in 2009. The species – '' Keuppia hyperbolaris'', '' Keuppia levante'', and '' Styletoctopus annae'' – lived about 95 million years ago, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]

See also