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...

Cirrate octopuses possess a well-developed internal shell that supports their muscular swimming fins. This is in contrast to the more familiar, finless...

Grimpoteuthis is a genus of pelagic cirrate (finned) octopods known as the dumbo octopus. The name "dumbo" originates from their resemblance to the title...

The main pigment in the ink is melanin, which gives it its black colour. Cirrate octopuses usually lack the ink sac. Octopuses have two sexes and have only...

species of cirrate octopus restricted to the Arctic Ocean and far North Atlantic. The species has the distinction of being the first cirrate octopus species...

Cirroteuthidae is a family of pelagic cirrate octopuses comprising at least five species in three genera. The cirrate octopods have a unique internal shell...

Cirrothauma murrayi, the blind cirrate octopus, is a presumably blind octopus whose eyes can likely sense light, but not form images. It has been found...

Cirroteuthis is a genus of cirrate octopus containing two species. It was the first genus (and contains the first species) of cirrate octopus to be described...

Stauroteuthis is a genus of deepwater cirrate octopus, a cephalopod mollusk. This is the only genus in the family Stauroteuthidae, and only three species...

compared to shallow-water octopus). Opisthoteuthis species (like other cirrate octopuses) use continuous spawning, where the female lays one or two large...

chathamensis, commonly known as the roughy umbrella octopus, is a species of cirrate octopus found in demersal habitats surrounding the Chatham Rise in New...

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...

Island, Canada. Tanabe and colleagues named two other additional species of cirrate octopus, Paleocirroteuthis pacifica and P. haggarti, also known from the...

Inopinoteuthis is a genus of deepsea octopuses from the cirrate family Cirroteuthidae. The two recognized species are fragile, gelatinous deep-sea octopods...

including squid, and eight webbed arms with cirrate octopods. Vampyroteuthis shares its eight cirrate arms with the Cirrata, in which lateral cirri...

Inopinoteuthis magna, also known as the big-eye jellyhead, is a species of deep-sea cirrate octopus that has been found in the Indian, Atlantic, and Pacific oceans...

(shells) Arthropod exoskeleton cuticle Brachiopod shell Cephalopod shell cirrate shell cuttlebone gladius Lorica Choanoflagellate lorica Protist shell coccosphere...

family Cirroctopodidae. Members of this genus have larger fins than other cirrate octopuses, and tend to be more muscular. They are found in the southern...

(shells) Arthropod exoskeleton cuticle Brachiopod shell Cephalopod shell cirrate shell cuttlebone gladius Lorica Choanoflagellate lorica Protist shell coccosphere...

bobtail squid, cuttlefish, and Spirula) as well as in the eight-limbed cirrate octopuses and vampire squid. Many extinct cephalopod groups also possessed...

adult. The same is true of the chitinous gladius of squid and octopuses. Cirrate octopods have arch-shaped cartilaginous fin supports, which are sometimes...

Luteuthis is a small genus of cirrate octopuses currently placed in the family Grimpoteuthidae. There are two species classified in this genus one from...

of the suborder Incirrata containing all extant octopods except for the cirrate octopodes, argonauts (Alloposidae, Argonautidae, Ocythoidae and Tremoctopodidae)...

Luteuthis dentatus, also known as Lu's jellyhead, is a medium-sized species of cirrate octopus found in the southwestern Pacific, originally described by Steve...

Argonautid eggcase Nautiloid shell Orthocone Internal Belemnoid guard Cirrate shell Cuttlebone Gladius (pen) Spirula shell Stylet Features External Aperture...

(shells) Arthropod exoskeleton cuticle Brachiopod shell Cephalopod shell cirrate shell cuttlebone gladius Lorica Choanoflagellate lorica Protist shell coccosphere...

vestiges provide new evidence on the detailed origin of incirrate and cirrate octopuses (Coleoidea)". PalZ. 92 (2): 203–217. Bibcode:2018PalZ...92..203F...

is a genus of cirrate octopuses, sometimes known as flapjack octopuses, which are found in all the world's oceans. Like other cirrates, octopuses in Opisthoteuthis...

Martin; Villanueva, Roger (2006). Taxonomy, Ecology And Behaviour Of The Cirrate Octopods. Oceanography and Marine Biology - an Annual Review. Vol. 44....

of a seated leaf) caudate caudatus leaf tip Tailed at the apex cirrus, cirrate leaf tip Having a rachis that extends beyond the leaf blade or leaflets...

(shells) Arthropod exoskeleton cuticle Brachiopod shell Cephalopod shell cirrate shell cuttlebone gladius Lorica Choanoflagellate lorica Protist shell coccosphere...

Cirrothauma is a genus of deep water octopuses from the cirrate family Cirroteuthidae. The species of Cirrothauma are fragile, gelatinous deep-sea octopods...

one of a very small number of octopuses to exhibit bioluminescence. The cirrate octopuses are deep sea species that have been relatively little studied...

female. Barnes, Robert (1987). Invertebrate Zoology. Saunders College Publishing. ISBN 0030229073. Cirrate male reproductive tract from TOLWeb v t e...

found from 130–1,100 m (430–3,610 ft) below the surface. Like many other cirrate octopuses, they live on or above the seafloor. This species isn't of interest...

Opisthoteuthis medusoides is a cirrate octopus living off the coast of Tanzania near Dar es Salaam. However, its actual range may be more extensive. The...

that the fossil has an indistinct head, sac-like body and similar fins to cirrate octopods. The absence of an internal shell or gladius, which is known from...

Bioluminescence is used in a variety of ways and for different purposes. The cirrate octopod Stauroteuthis syrtensis uses emits bioluminescence from its sucker...

Muensterella and crown cirrates and incirrates. It is possible that the patelloctopodid clade includes the last common ancestor of cirrate and incirrate octopods...

Cirroctopus hochbergi (common name: Four-blotched umbrella octopus) is a cirrate octopus living between 800 and 1,070 meters deep off the coast of New Zealand...

It is the only species in the monotypic genus Cryptoteuthis one of the cirrate octopuses of the family Grimpoteuthidae, the umbrella octopuses. It is...

Exsuperoteuthis is a genus of cirrate octopuses, comprising two or three species found in the northern and southwestern Pacific. The genus was recently...

deep-sea octopus first described in 1883 by Addison E. Verrill. Like all cirrate octopuses, O. agassizii has fleshy fins to aid in swimming and a small...

zone, a deep area of the ocean where no sunlight reaches. Like many other cirrate octopuses, it lives on or just above the seafloor. Opisthoteuthis grimaldii...

 gilchristi were found among a total of 1725 cephalopod beaks, and this cirrate octopus formed 3% of the diet of the toothfish. This study extended the...

when damaged. Although Opisthoteuthidae are categorized as cirrates, unlike the other cirrates, they do not have an intermediate web; rather, they use the...

Opisthoteuthis albatrossi (common name in Japanese: オオクラゲダコ) is a cirrate octopus originally found off Kinkasan in Japan. This species was described from...

animal has fimbriated head lobes and side lobes that are fimbriated and cirrated. The radula has small median teeth, and the lateral teeth are single and...

(shells) Arthropod exoskeleton cuticle Brachiopod shell Cephalopod shell cirrate shell cuttlebone gladius Lorica Choanoflagellate lorica Protist shell coccosphere...

Opisthoteuthis bruuni is a species of finned cirrate octopus found along the western coast of the Americas from Chile to as far north as California. Their...

four specimens found so far are male. The species is somewhat large for a cirrate octopus, reaching a total length of 362 mm (14.3 in) long. The mantle,...

Opisthoteuthis pluto is a deep-sea cirrate octopus found off southern Australia in the bathyal zone. The species was described by S. Stillman Berry in...

deepest observation of any squid and rivalled only by some unidentified cirrate octopods from the same habitat as the deepest observation of any cephalopod...

(shells) Arthropod exoskeleton cuticle Brachiopod shell Cephalopod shell cirrate shell cuttlebone gladius Lorica Choanoflagellate lorica Protist shell coccosphere...

Stauroteuthis kengrahami is a species of small pelagic cirrate octopus. It is currently only known from off eastern Australia (Tasman Sea). The species...

(shells) Arthropod exoskeleton cuticle Brachiopod shell Cephalopod shell cirrate shell cuttlebone gladius Lorica Choanoflagellate lorica Protist shell coccosphere...

the subclass Ammonoidea. Cuttlefish, squid, spirula, vampire squid, and cirrate octopuses have small internal shells. Females of the octopus genus Argonauta...

Insigniteuthis is a genus of cirrate octopuses, found in the deep-sea around the world's oceans. The genus was created in 2024 to accommodate species...

vestiges provide new evidence on the detailed origin of incirrate and cirrate octopuses (Coleoidea)". PalZ. 92 (2): 203–217. doi:10.1007/s12542-017-0399-8...

(shells) Arthropod exoskeleton cuticle Brachiopod shell Cephalopod shell cirrate shell cuttlebone gladius Lorica Choanoflagellate lorica Protist shell coccosphere...

flapjack octopus is a species of genus Opisthoteuthis, which are known as the cirrate octopuses. Octopuses in this genus are known as the flapjack octopuses...

(shells) Arthropod exoskeleton cuticle Brachiopod shell Cephalopod shell cirrate shell cuttlebone gladius Lorica Choanoflagellate lorica Protist shell coccosphere...

bodies, and two threadlike structures called cirri for each sucker. Many cirrate octopuses live in deep water. Octopuses in the species Opisthoteuthis borealis...

its slightly concave shell saddle surface, whereas most other Pacific cirrates show either a more convex or flattened shell. The shell is U-shaped, and...

(shells) Arthropod exoskeleton cuticle Brachiopod shell Cephalopod shell cirrate shell cuttlebone gladius Lorica Choanoflagellate lorica Protist shell coccosphere...

though more commonly, growth ranges from 1–3 m annually. The leaves are cirrate and can reach up to 8 m in length, including a cirrus extension up to 3 m...

prey by enveloping small animals within its web, similar to some other cirrate octopods. It eats a variety of small prey: gammarid amphipods, polychaetes...

(shells) Arthropod exoskeleton cuticle Brachiopod shell Cephalopod shell cirrate shell cuttlebone gladius Lorica Choanoflagellate lorica Protist shell coccosphere...

Muensterella and crown cirrates and incirrates. It is possible that the patelloctopodid clade includes the last common ancestor of cirrate and incirrate octopods...

to 15 m., with sheaths to 30 mm diameter. Leaf fronds are described as cirrate (with a cirrus: extension of the rattan leaf tip armed with grappling hooks)...

known specimen but to still be able to describe the species. The single cirrate specimen was collected in the North Pacific Ocean during scientific cruise...

"A new species of Stauroteuthis (Octopoda: Cirrata) and further novel cirrate octopods from Australian waters". Molluscan Research. 43 (3–4): 153–172...

(shells) Arthropod exoskeleton cuticle Brachiopod shell Cephalopod shell cirrate shell cuttlebone gladius Lorica Choanoflagellate lorica Protist shell coccosphere...

(shells) Arthropod exoskeleton cuticle Brachiopod shell Cephalopod shell cirrate shell cuttlebone gladius Lorica Choanoflagellate lorica Protist shell coccosphere...

(shells) Arthropod exoskeleton cuticle Brachiopod shell Cephalopod shell cirrate shell cuttlebone gladius Lorica Choanoflagellate lorica Protist shell coccosphere...

(shells) Arthropod exoskeleton cuticle Brachiopod shell Cephalopod shell cirrate shell cuttlebone gladius Lorica Choanoflagellate lorica Protist shell coccosphere...

vestiges provide new evidence on the detailed origin of incirrate and cirrate octopuses (Coleoidea)". PalZ. 92 (2): 203–217. doi:10.1007/s12542-017-0399-8...

(shells) Arthropod exoskeleton cuticle Brachiopod shell Cephalopod shell cirrate shell cuttlebone gladius Lorica Choanoflagellate lorica Protist shell coccosphere...

(shells) Arthropod exoskeleton cuticle Brachiopod shell Cephalopod shell cirrate shell cuttlebone gladius Lorica Choanoflagellate lorica Protist shell coccosphere...

(shells) Arthropod exoskeleton cuticle Brachiopod shell Cephalopod shell cirrate shell cuttlebone gladius Lorica Choanoflagellate lorica Protist shell coccosphere...

the arms were different lengths, and that his specimens, like many other cirrate ("Dumbo") octopuses, had thick webs connecting their arms. The cirri are...

(shells) Arthropod exoskeleton cuticle Brachiopod shell Cephalopod shell cirrate shell cuttlebone gladius Lorica Choanoflagellate lorica Protist shell coccosphere...

Insigniteuthis obscura is a species of finned cirrate octopus (or flapjack octopus) found along southern and southeastern Australia, over a depth range...

(shells) Arthropod exoskeleton cuticle Brachiopod shell Cephalopod shell cirrate shell cuttlebone gladius Lorica Choanoflagellate lorica Protist shell coccosphere...

(shells) Arthropod exoskeleton cuticle Brachiopod shell Cephalopod shell cirrate shell cuttlebone gladius Lorica Choanoflagellate lorica Protist shell coccosphere...

tricircular †circulus circul- †circellus circell- cirrus cirr- curl, tentacle cirrate, cirriform, cirriped, cirrose, cirrous, cirrus citer • citerior • citimus...

(150 lb), and the former has a maximum total length of more than 6 m (20 ft). Cirrate (finned) octopods can also reach a large size, with the largest captured...

(shells) Arthropod exoskeleton cuticle Brachiopod shell Cephalopod shell cirrate shell cuttlebone gladius Lorica Choanoflagellate lorica Protist shell coccosphere...

(shells) Arthropod exoskeleton cuticle Brachiopod shell Cephalopod shell cirrate shell cuttlebone gladius Lorica Choanoflagellate lorica Protist shell coccosphere...

(shells) Arthropod exoskeleton cuticle Brachiopod shell Cephalopod shell cirrate shell cuttlebone gladius Lorica Choanoflagellate lorica Protist shell coccosphere...

Opisthoteuthis (Exsuperoteuthis) persephone is a cirrate octopus found off southern Australia. The species was described by S. Stillman Berry from eight...

R. Villanueva (June 13, 2006). "Taxonomy, ecology and behaviour of the cirrate octopods.". In Gordon, J.D.M.; Atkinson, R.J.A.; Gibson, R.N. (eds.). Oceanography...

(shells) Arthropod exoskeleton cuticle Brachiopod shell Cephalopod shell cirrate shell cuttlebone gladius Lorica Choanoflagellate lorica Protist shell coccosphere...

vestiges provide new evidence on the detailed origin of incirrate and cirrate octopuses (Coleoidea)". PalZ. 92 (2): 203–217. doi:10.1007/s12542-017-0399-8...

(shells) Arthropod exoskeleton cuticle Brachiopod shell Cephalopod shell cirrate shell cuttlebone gladius Lorica Choanoflagellate lorica Protist shell coccosphere...

(shells) Arthropod exoskeleton cuticle Brachiopod shell Cephalopod shell cirrate shell cuttlebone gladius Lorica Choanoflagellate lorica Protist shell coccosphere...

suckers on its arms. Its shell is shaped like the letter "U". Like other cirrate octopods, G. challengeri has fins on either side of its mantle that it...

(shells) Arthropod exoskeleton cuticle Brachiopod shell Cephalopod shell cirrate shell cuttlebone gladius Lorica Choanoflagellate lorica Protist shell coccosphere...

Cirroteuthis kirrilyae is a species of cirrate octopus in family Cirroteuthidae, previously confused with the closely related Cirroteuthis muelleri. The...

(shells) Arthropod exoskeleton cuticle Brachiopod shell Cephalopod shell cirrate shell cuttlebone gladius Lorica Choanoflagellate lorica Protist shell coccosphere...

(shells) Arthropod exoskeleton cuticle Brachiopod shell Cephalopod shell cirrate shell cuttlebone gladius Lorica Choanoflagellate lorica Protist shell coccosphere...

filament-like appendages which most likely represent cirri as seen in modern cirrate octopus. Additionally, Glyphiteuthis preserves a singular row of suckers...

vestiges provide new evidence on the detailed origin of incirrate and cirrate octopuses (Coleoidea)". PalZ. 92 (2): 203–217. doi:10.1007/s12542-017-0399-8...

(shells) Arthropod exoskeleton cuticle Brachiopod shell Cephalopod shell cirrate shell cuttlebone gladius Lorica Choanoflagellate lorica Protist shell coccosphere...

(shells) Arthropod exoskeleton cuticle Brachiopod shell Cephalopod shell cirrate shell cuttlebone gladius Lorica Choanoflagellate lorica Protist shell coccosphere...

(shells) Arthropod exoskeleton cuticle Brachiopod shell Cephalopod shell cirrate shell cuttlebone gladius Lorica Choanoflagellate lorica Protist shell coccosphere...

leaves are undivided or with few segments, in maturity becoming pinnate and cirrate with a tubular, unarmed or sparsely armed, scaly leaf sheath. Ocreas present...

called as Pohlsepia), which has originally been interpreted as an oldest cirrate octopus, but later reinterpreted as rare record of soft tissue of nautiloid...

University of Michigan. p. 235. Roper, Clyde F. E.; Brundage, Walter L. (1972). Cirrate Octopods with Associated Deep-sea Organisms. Washington, D.C.: Smithsonian...

Opisthoteuthis mero, commonly known as Mero's umbrella octopus, is a species of cirrate octopus from demersal habitats surrounding New Zealand. O. mero is the...

Martin; Villanueva, Roger (2006). "Taxonomy, ecology, and behaviour of the cirrate octopods". Oceanography and Marine Biology: An Annual Review. 44: 277–322...

(shells) Arthropod exoskeleton cuticle Brachiopod shell Cephalopod shell cirrate shell cuttlebone gladius Lorica Choanoflagellate lorica Protist shell coccosphere...

(shells) Arthropod exoskeleton cuticle Brachiopod shell Cephalopod shell cirrate shell cuttlebone gladius Lorica Choanoflagellate lorica Protist shell coccosphere...

(shells) Arthropod exoskeleton cuticle Brachiopod shell Cephalopod shell cirrate shell cuttlebone gladius Lorica Choanoflagellate lorica Protist shell coccosphere...

(shells) Arthropod exoskeleton cuticle Brachiopod shell Cephalopod shell cirrate shell cuttlebone gladius Lorica Choanoflagellate lorica Protist shell coccosphere...

Opisthoteuthis. It also had a web connecting its long arms, which is common for cirrate octopuses and some incirrate octopuses. The specimen was found in the open...

(shells) Arthropod exoskeleton cuticle Brachiopod shell Cephalopod shell cirrate shell cuttlebone gladius Lorica Choanoflagellate lorica Protist shell coccosphere...

large, reaching a total length of 470 millimeters (18.5 inches). Like all cirrates, it has a web over its arms and cirri between its suckers, as well as fins...

(shells) Arthropod exoskeleton cuticle Brachiopod shell Cephalopod shell cirrate shell cuttlebone gladius Lorica Choanoflagellate lorica Protist shell coccosphere...

(shells) Arthropod exoskeleton cuticle Brachiopod shell Cephalopod shell cirrate shell cuttlebone gladius Lorica Choanoflagellate lorica Protist shell coccosphere...

to aid in movement. The fins are long when compared to those of other cirrate octopus species. Thick, fleshy webs connect their arms, creating the distinctive...

Every arm has between 60 and 70 suckers, which are small. Like other cirrates, G. meangensis has a web covering its arms to some degree; the web of G...

reaches 370 millimeters. Its arms are long. G. discoveryi, like other cirrates, has a web covering its arms to some degree; this species' web reaches...

(shells) Arthropod exoskeleton cuticle Brachiopod shell Cephalopod shell cirrate shell cuttlebone gladius Lorica Choanoflagellate lorica Protist shell coccosphere...

vestiges provide new evidence on the detailed origin of incirrate and cirrate octopuses (Coleoidea)". PalZ. 92 (2): 203–217. Bibcode:2018PalZ...92..203F...