A superorder in the class CEPHALOPODA, consisting of the orders Octopoda (octopus) with over 200 species and Vampyromorpha with a single species. The latter is a phylogenetic relic but holds the key to the origins of Octopoda.

How vertebrate and invertebrate visual pigments differ in their mechanism of photoactivation. (1/144)

In vertebrate visual pigments, a glutamic acid serves as a negative counterion to the positively charged chromophore, a protonated Schiff base of retinal. When photoisomerization leads to the Schiff base deprotonating, the anionic glutamic acid becomes protonated, forming a neutral species that activates the visual cascade. We show that in octopus rhodopsin, the glutamic acid has no anionic counterpart. Thus, the "counterion" is already neutral, so no protonated form of an initially anionic group needs to be created to activate. This helps to explain another observation-that the active photoproduct of octopus rhodopsin can be formed without its Schiff base deprotonating. In this sense, the mechanism of light activation of octopus rhodopsin is simpler than for vertebrates, because it eliminates one of the steps required for vertebrate rhodopsins to achieve their activating state.  (+info)

O-Crystallin, arginine kinase and ferritin from the octopus lens. (2/144)

Three proteins have been identified in the eye lens of the octopus, Octopus dofleini. A 22 kDa protein comprising 3-5% of the soluble protein of the lens is 35-43% identical to a family of phosphatidylethanolamine-binding proteins of vertebrates. Other members of this family include the immunodominant antigen of the filarial parasite, Onchocerca volvulus, putative odorant-binding proteins of Drosophila and a protein with unknown function of Caenorhabditis elegans. We have called this protein O-crystallin on the basis of its abundance in the transparent lens. O-Crystallin mRNA was detected only in the lens. Two tryptic peptides of another octopus lens protein, less abundant than O-crystallin, showed 80% identity to arginine kinase of invertebrates, a relative of creatine kinase of vertebrates. Finally, ferritin cDNA was isolated as an abundant cDNA from the octopus lens library. Northern blots showed that ferritin mRNA is not lens-specific.  (+info)

Subunit organization of the abalone Haliotis tuberculata hemocyanin type 2 (HtH2), and the cDNA sequence encoding its functional units d, e, f, g and h. (3/144)

We have developed a HPLC procedure to isolate the two different hemocyanin types (HtH1 and HtH2) of the European abalone Haliotis tuberculata. On the basis of limited proteolytic cleavage, two-dimensional immunoelectrophoresis, PAGE, N-terminal protein sequencing and cDNA sequencing, we have identified eight different 40-60-kDa functional units (FUs) in HtH2, termed HtH2-a to HtH2-h, and determined their linear arrangement within the elongated 400-kDa subunit. From a Haliotis cDNA library, we have isolated and sequenced a cDNA clone which encodes the five C-terminal FUs d, e, f, g and h of HtH2. As shown by multiple sequence alignments, defg of HtH2 correspond structurally to defg from Octopus dofleini hemocyanin. HtH2-e is the first FU of a gastropod hemocyanin to be sequenced. The new Haliotis hemocyanin sequences are compared to their counterparts in Octopus, Helix pomatia and HtH1 (from the latter, the sequences of FU-f, FU-g and FU-h have recently been determined) and discussed in relation to the recent 2.3 A X-ray structure of FU-g from Octopus hemocyanin and the 15 A three-dimensional reconstruction of the Megathura crenulata hemocyanin didecamer from electron micrographs. This data allows, for the first time, an insight into the evolution of the two functionally different hemocyanin isoforms found in marine gastropods. It appears that they evolved several hundred million years ago within the Prosobranchia, after separation of the latter from the branch leading to the Pulmonata. Moreover, as a structural explanation for the inefficiency of the type 1 hemocyanin to form multidecamers in vivo, the additional N-glycosylation sites in HtH1 compared to HtH2 are discussed.  (+info)

A wide-angle gradient index optical model of the crystalline lens and eye of the octopus. (4/144)

Cephalopods and fish have had no common ancestor since the Cambrian, and their eyes are a classic example of convergent evolution. The octopus has no cornea, and immerson renders the trout cornea optically ineffective. As a result, the nearly spherical lens is responsible for all refraction in these eyes. In spite of the fact that the octopus lens consists of two joined parts, while the trout lens consists of one part, we show here that their optical properties are very similar. An index gradient bends rays within these lenses, adding power and correcting spherical aberration. High spherical symmetry in both lenses strongly reduces other monochromatic aberrations and yields a wide field of vision, advantageous in attack and evasion. The octopus Mattheissen's ratio, 2.83, an inverse measure of light-gathering power, lies above the trout value of 2.38 but within the range of values reported for fish. Strong uncorrected longitudinal chromatic aberration is nearly identical in both animals as a result of similar lens protein optical properties, and will limit resolution. We discuss how animal lifestyle requirements and lens material properties influence the design of these eyes.  (+info)

Formation and characterization of planar lipid bilayer membranes from synthetic phytanyl-chained glycolipids. (5/144)

The formability, current-voltage characteristics and stability of the planar lipid bilayer membranes from the synthetic phytanyl-chained glycolipids, 1, 3-di-O-phytanyl-2-O-(beta-glycosyl)glycerols (Glc(Phyt)(2), Mal(N)(Phyt)(2)) were studied. The single bilayer membranes were successfully formed from the glycolipid bearing a maltotriosyl group (Mal(3)(Phyt)(2)) by the folding method among the synthetic glycolipids examined. The membrane conductance of Mal(3)(Phyt)(2) bilayers in 100 mM KCl solution was significantly lower than that of natural phospholipid, soybean phospholipids (SBPL) bilayers, and comparable to that of 1,2-diphytanoyl-sn-glycero-3-phosphocholine (DPhPC) bilayers. From the permeation measurements of lipophilic ions through Mal(3)(Phyt)(2) and DPhPC bilayers, it could be presumed that the carbonyl groups in glycerol backbone of the lipid molecule are not necessarily required for the total dipole potential barrier against cations in Mal(3)(Phyt)(2) bilayer. The stability of Mal(3)(Phyt)(2) bilayers against long-term standing and external electric field change was rather high, compared with SBPL bilayers. Furthermore, a preliminary experiment over the functional incorporation of membrane proteins was demonstrated employing the channel proteins derived from octopus retina microvilli vesicles. The channel proteins were functionally incorporated into Mal(3)(Phyt)(2) bilayers in the presence of a negatively charged glycolipid. From these observations, synthetic phytanyl-chained glycolipid bilayers are promising materials for reconstitution and transport studies of membrane proteins.  (+info)

The sequence of a gastropod hemocyanin (HtH1 from Haliotis tuberculata). (6/144)

The eight functional units (FUs), a-h, of the hemocyanin isoform HtH1 from Haliotis tuberculata (Prosobranchia, Archaeogastropoda) have been sequenced via cDNA, which provides the first complete primary structure of a gastropod hemocyanin subunit. With 3404 amino acids (392 kDa) it is the largest polypeptide sequence ever obtained for a respiratory protein. The cDNA comprises 10,758 base pairs and includes the coding regions for a short signal peptide, the eight different functional units, a 3'-untranslated region of 478 base pairs, and a poly(A) tail. The predicted protein contains 13 potential sites for N-linked carbohydrates (one for HtH1-a, none for HtH1-c, and two each for the other six functional units). Multiple sequence alignments show that the fragment HtH1-abcdefg is structurally equivalent to the seven-FU subunit from Octopus hemocyanin, which is fundamental to our understanding of the quaternary structures of both hemocyanins. Using the fossil record of the gastropod-cephalopod split to calibrate a molecular clock, the origin of the molluscan hemocyanin from a single-FU protein was calculated as 753 +/- 68 million years ago. This fits recent paleontological evidence for the existence of rather large mollusc-like species in the late Precambrian.  (+info)

Egg brooding by deep-sea octopuses in the North Pacific Ocean. (7/144)

Videotapes made from the submersible Alvin on Baby Bare, a 2600-m-deep North Pacific basalt outcrop, and at two other deep-sea localities document that octopuses of the genera Graneledone and Benthoctopus attach their eggs to hard substrate and apparently brood them through development. The behavior of brooding females was generally similar to that of shallow-water octopuses, but the genera showed apparent differences. In addition to the high density of brooding females observed at Baby Bare, which may relate to the increased availability of exposed hard substrates for egg attachment and of prey, females are suggested to increasingly associate with hard substrates as they mature. The biology of Baby Bare may seem unduly unique because the outcrop is isolated on a sedimented plain and is among the few exposures of hard substrate other than hydrothermal vents that have been explored by submersible. On the sediment-covered ocean floor, the availability of hard substrate may strongly affect the distribution of brooding octopuses. The size and shape of boreholes in 19 of over 400 thyasirid clam shells collected from Baby Bare support the hypothesis that octopuses had preyed upon the clams.  (+info)

Neuromuscular system of the flexible arm of the octopus: physiological characterization. (8/144)

The octopus arm is an outstanding example of an efficient boneless and highly flexible appendage. We have begun characterizing the neuromuscular system of the octopus arm in both innervated muscle preparations and dissociated muscle cells. Functionally antagonistic longitudinal and transverse muscle fibers showed no differences in membrane properties and mode of innervation. The muscle cells are excitable but have a broad range of linear membrane properties. They are electrotonically very compact so that localized synaptic inputs can control the membrane potential of the entire muscle cell. Three distinct excitatory neuronal inputs to each arm muscle cell were identified; their reversal potentials were extrapolated to be about -10 mV. These appear to be cholinergic as they are blocked by hexamethonium, D-tubocurarine, and atropine. Two inputs have low quantal amplitude (1-7 mV) and slow rise times (4-15 ms), whereas the third has a large size (5-25 mV) and fast rise time (2-4 ms). This large synaptic input is most likely due to exceptionally large quantal events. The probability of release is rather low, suggesting a stochastic activation of muscle cells. All inputs demonstrated a modest activity-dependent plasticity typical of fast neuromuscular systems. The pre- and postsynaptic properties suggest a rather direct relation between neuronal activity and muscle action. The lack of significant electrical coupling between muscle fibers and the indications for the small size of the motor units suggest that the neuromuscular system of the octopus arm has evolved to ensure a high level of precise localization in the neural control of arm function.  (+info)

Octopodiformes is a taxonomic order that includes two main groups: octopuses (Octopoda) and vampire squids (Vampyroteuthis infernalis). This grouping is based on similarities in their fossil record and molecular data. Although they are commonly referred to as squids, vampire squids are not true squids, which belong to a different order called Teuthida.

Octopodiformes are characterized by several features, including:

1. A highly developed brain and complex nervous system.
2. Eight arms with suckers, but no tentacles.
3. The ability to change their skin color and texture for camouflage.
4. Three hearts that pump blood through their bodies.
5. Blue blood due to the copper-based protein hemocyanin.
6. A siphon used for jet propulsion and other functions, such as waste expulsion and mating.
7. Ink sacs for defense against predators.

Octopuses are known for their intelligence, problem-solving abilities, and short lifespans (usually less than two years). Vampire squids, on the other hand, live in deep ocean environments and have a unique feeding strategy that involves filtering organic matter from the water. They can also produce bioluminescent displays to confuse predators.

It is important to note that while Octopodiformes is a well-supported taxonomic group, there is still ongoing research and debate about the relationships among cephalopods (the class that includes octopuses, squids, cuttlefish, and nautiluses) and their classification.

CephBase: Octopodiformes Tree of Life web project: Octopodiformes v t e (Articles with short description, Short description ... Octopodiformes is a superorder of the subclass Coleoidea, comprising the octopuses and the vampire squid. All living members of ... Young, Richard E.; Vecchione, Michael; Fuchs, Dirk (May 3, 2010). "Octopodiformes Berthold and Engeser, 1987. Vampire Squid and ... Octopodiformes is often considered the crown group of octopuses and vampire squids, including all descendants of their common ...
These are the standard measures of beak size in Decapodiformes; hood length is preferred for Octopodiformes. They can be used ...
In Octopodiformes (eight-limbed cephalopods), the anterior edge of the mantle is not clearly delimited dorsally due to advanced ... hood length is preferred for Octopodiformes. Mantle length has been estimated from video recordings of squid in the wild. ...
Evolution of the gills in the Octopodiformes. Bull. Mar. Sci. . 71: 1003-1018. 2005 Young, R. E. and M. Vecchione. 2005. ...
2002). Evolution of the gills in the octopodiformes. Bulletin of marine science. 71(2): 1003-1017 Wells, M.J., & Wells, J. ( ...
Superorder Octopodiformes has modifications to arm pair II; it is significantly reduced and used only as a sensory filament in ... ram's horn squid Superorder Octopodiformes Family †Trachyteuthididae (incertae sedis) Order Vampyromorphida: vampire squid ...
Syllipsimopodi is considered as belonging to Octopodiformes which contains modern octopuses and vampire squids. The tentacles ...
Bizikov, V.A. (2004). Evolution of shell in Octopodiformes (Cephalopoda) Archived 2013-10-21 at the Wayback Machine. In: ...
Stuntman Keith Arbuthnot plays the alien in his true form: an androgynous, humanoid Octopodiformes being. David Bianchi ... and is further reinforced when Harry describes his own alien species as a kind of Octopodiformes. 42 is initially stranded in a ...
This cohort contains two extant groups: Decapodiformes (squid, cuttlefish, and relatives) and Octopodiformes (octopuses and the ... ram's horn squid Superorder Octopodiformes Family †Trachyteuthididae (incertae sedis) Order Vampyromorphida: vampire squid ...
Octopodiformes, Prehistoric cephalopod genera). ...
... but Doyle considered it to be a stem-group to Decapodiformes and Octopodiformes. However, the higher classification of ... Octopodiformes (octopuses), and Belemnoidea; with Belemnoidea containing the orders Aulacocerida, Diplobelida, and Belemnitida ...
... which reaches its greatest development in Octopodiformes). A fin may be attached to the internal shell or shell remnant (such ...
Octopodiformes, Prehistoric cephalopod genera). ...
Octopodiformes, Prehistoric cephalopod genera). ...
... using multiple genes and mitochondrial genomes have shown that the Vampyromorphida are the first group of Octopodiformes to ...
... cuttlefish Superorder Octopodiformes Family †Trachyteuthididae (incertae sedis) Order Vampyromorphida: vampire squid Order ...
... becoming the Octopodiformes. The following orders are recognised in the superorder Decapodiformes: Bathyteuthida †Belemnitida † ...
... cuttlefish Superorder Octopodiformes Family †Trachyteuthididae (incertae sedis) Order Vampyromorphida: vampire squid Order ...
Octopodiformes, Jurassic cephalopods, Fossils of France, Fossil taxa described in 2002). ...
Octopodiformes) due to the fact that more than eight tentacles have never been found in fossils. However, the structure of the ...
... octopodiformes MeSH B01.500.644.400 - gastropoda MeSH B01.500.644.400.060 - aplysia MeSH B01.500.644.400.150 - clione MeSH ...
... coastal squid Order Bathyteuthida Superorder Octopodiformes (also known as Vampyropoda) Family † Trachyteuthididae Order ...
... cuttlefish Superorder Octopodiformes Family †Trachyteuthididae (incertae sedis) Order Vampyromorphida: vampire squid Order ...
Octopodiformes, Prehistoric cephalopod genera, Mississippian cephalopods, Carboniferous cephalopods of North America, Fossils ...
Boletzkyida Superorder Octopodiformes Gustavo Sanchez; Jeffrey Jolly; Amanda Reid; Chikatoshi Sugimoto; Chika Azama; Ferdinand ...
Octopodiformes, Cephalopod families, Extant Middle Jurassic first appearances, Taxa named by Johannes Thiele (zoologist), All ...
... and in a single extant member of the Octopodiformes, the vampire squid (Vampyroteuthis infernalis). It is so named for its ...
Octopodiformes, Cephalopod orders, All stub articles, Cephalopod stubs). ...
... ram's horn squid Order Sepiida cuttlefish Order Sepiolida bobtail squid Order Teuthida squid Superorder Octopodiformes Order ...
CephBase: Octopodiformes Tree of Life web project: Octopodiformes v t e (Articles with short description, Short description ... Octopodiformes is a superorder of the subclass Coleoidea, comprising the octopuses and the vampire squid. All living members of ... Young, Richard E.; Vecchione, Michael; Fuchs, Dirk (May 3, 2010). "Octopodiformes Berthold and Engeser, 1987. Vampire Squid and ... Octopodiformes is often considered the crown group of octopuses and vampire squids, including all descendants of their common ...
Nearly all octopuses are predatory; bottom-dwelling octopuses eat mainly crustaceans, polychaete worms, and other molluscs such as whelks and clams; open-ocean octopuses eat mainly prawns, fish and other cephalopods.[88] Major items in the diet of the giant Pacific octopus include bivalve molluscs such as the cockle Clinocardium nuttallii, clams and scallops and crustaceans such as crabs and spider crabs. Prey that it is likely to reject include moon snails because they are too large and limpets, rock scallops, chitons and abalone, because they are too securely fixed to the rock.[86] Small cirrate octopuses such as those of the genera Grimpoteuthis and Opisthoteuthis typically prey on polychaetes, copepods, amphipods and isopods.[89] A benthic (bottom-dwelling) octopus typically moves among the rocks and feels through the crevices. The creature may make a jet-propelled pounce on prey and pull it toward the mouth with its arms, the suckers restraining it. Small prey may be completely trapped by ...
With deadly first-person shooter Insurgency: Sandstorm, the first thing I have to tell you about is the noise. Oh my wo…
Superordo: Octopodiformes Ordo: Octopoda Subordo: Cirrina Familia: Cirroctopodidae. Genus (1): Cirroctopus. Name[edit]. ...
Octopodiformes (Superorder). *Octopoda (Order). *Incirrata (Suborder). *Octopodoidea (Superfamily). *Megaleledonidae (Family). ...
Stuntman Keith Arbuthnot plays the alien in his true form: an androgynous, humanoid Octopodiformes being. ... and is further reinforced when Harry describes his own alien species as a kind of Octopodiformes. 42 is initially stranded in a ...
octopodiformes.. duo. Intelligence and sensation: not to be tricked by screw-top lids,. or outsmarted by bipeds. or gravity; ...
Octopoda use Octopodiformes Octopodas use Octopodiformes Octopodiforme use Octopodiformes Octopodiformes Octopressin use ...
Octopodiformes. Order:. Octopod. FREQUENTLY ASKED QUESTIONS: People often inquire about the overall amount of hearts in an ...
Octopodiformes is a superorder of the subclass Coleoidea. It comprises the octopuses and the vampire squid. All members of ... This cohort contains two extant groups: Decapodiformes and Octopodiformes . Species within this group exist in all major ... Octopodiformes have 8 arms.-Classification:*Class Cephalopoda**Subclass Nautiloidea: nautilus**Subclass †Ammonoidea: ammonites ...
Octopoda use Octopodiformes Octopodiformes Octopus use Octopodiformes Octopus Venoms use Mollusk Venoms ...
Octopoda use Octopodiformes Octopodas use Octopodiformes Octopodiforme use Octopodiformes Octopodiformes Octopressin use ...
Octopoda use Octopodiformes Octopodiformes Octopus use Octopodiformes Octopus Venoms use Mollusk Venoms ...
Octopoda use Octopodiformes Octopodiformes Octopus use Octopodiformes Octopus Venoms use Mollusk Venoms ...
Octopoda use Octopodiformes Octopodiformes Octopus use Octopodiformes Octopus Venoms use Mollusk Venoms ...
Octopoda use Octopodiformes Octopodiformes Octopus use Octopodiformes Octopus Venoms use Mollusk Venoms ...
Octopoda use Octopodiformes Octopodiformes Octopus use Octopodiformes Octopus Venoms use Mollusk Venoms ...
Octopoda use Octopodiformes Octopodiformes Octopus use Octopodiformes Octopus Venoms use Mollusk Venoms ...
Octopoda use Octopodiformes Octopodiformes Octopus use Octopodiformes Octopus Venoms use Mollusk Venoms ...
Octopoda use Octopodiformes Octopodiformes Octopus use Octopodiformes Octopus Venoms use Mollusk Venoms ...
Octopoda use Octopodiformes Octopodiformes Octopus use Octopodiformes Octopus Venoms use Mollusk Venoms ...
Dive into the research topics of First record Octopus Octopus selene Voss, 1971 (Cephalopoda: Octopoda) in Peruvian waters, with notes of their geographical distribution: Octopoda) in Peruvian waters, with notes of their geographical distribution. Together they form a unique fingerprint. ...
Octopodiformes. The earliest vampyromorphs, of which the only living member is the vampire squid, first appeared during the ...
CattleOctopodiformesDucksChickensScyphozoaMice, Inbred C57BLMice, TransgenicRabbitsMice, KnockoutEscherichia coliDecapodiformes ... Octopodiformes. A superorder in the class CEPHALOPODA, consisting of the orders Octopoda (octopus) with over 200 species and ... CulturedOctopodiformesBlotting, WesternDucksSequence Homology, Amino AcidCell LinePeptide FragmentsLens Nucleus, Crystalline ...
Octopodiformes (1) Tipo de estudo * Prognostic_studies (2) * Guia de Prática Clínica (1) ...
Georgiou, M., Fujinami, K., Vincent, A., Nasser, F., Khateb, S., Vargas, M. E., Thiadens, A. A. H. J., de Carvalho, E. R., Nguyen, X. T. A., De Guimarães, T. A. C., Robson, A. G., Mahroo, O. A., Pontikos, N., Arno, G., Fujinami-Yokokawa, Y., Leo, S. M., Liu, X., Tsunoda, K., Hayashi, T., Jimenez-Rolando, B., & 17 othersMartin-Merida, M. I., Avila-Fernandez, A., Carreño, E., Garcia-Sandoval, B., Ayuso, C., Sharon, D., Kohl, S., Huckfeldt, R. M., Boon, C. J. F., Banin, E., Pennesi, M. E., Wissinger, B., Webster, A. R., Héon, E., Khan, A. O., Zrenner, E. & Michaelides, M., Oct 2021, In: American journal of ophthalmology. 230, p. 1-11 11 p.. Research output: Contribution to journal › Article › peer-review ...
Souza-Alves, J. P., Mourthe, I., Hilário, R. R., Bicca-Marques, J. C., Rehg, J., Gestich, C. C., Acero-Murcia, A. C., Adret, P., Aquino, R., Berthet, M., Bowler, M., Calouro, A. M., Canale, G. R., Cardoso, N. D. A., Caselli, C. B., Cäsar, C., Chagas, R. R. D., Clyvia, A., Corsini, C. F., Defler, T., & 52 othersDeLuycker, A., Di Fiore, A., Dingess, K., Erkenswick, G., Ferreira, M. A., Fernandez-Duque, E., Ferrari, S. F., Fontes, I. P., Gomes, J. D., Gonçalves, F. P. R., Guerra, M., Haugaasen, T., Heiduck, S., Heymann, E. W., Hodges, S., Huashuayo-Llamocca, R., Jerusalinsky, L., Kasper, C. B., Lawrence, J., Lueffe, T. M., Lopes, K. G. D., Martínez, J., de Melo, F. R., Messias, M. R., Nagy-Reis, M. B., Nole, I., Paciência, F., Palacios, E., Poirier, A., Porfírio, G., Porter, A., Price, E., Printes, R. C., Quintino, E. P., Reis, E. A., Rocha, A., Rodríguez, A., Röhe, F., Rumiz, D., Shanee, S., Santana, M. M., Setz, E. Z. F., de Souza, F. S. C., Spironello, W., Tirado Herrera, E. R., Vinhas, ...
Vitale, I., Pietrocola, F., Guilbaud, E., Aaronson, S. A., Abrams, J. M., Adam, D., Agostini, M., Agostinis, P., Alnemri, E. S., Altucci, L., Amelio, I., Andrews, D. W., Aqeilan, R. I., Arama, E., Baehrecke, E. H., Balachandran, S., Bano, D., Barlev, N. A., Bartek, J., Bazan, N. G., & 208 othersBecker, C., Bernassola, F., Bertrand, M. J. M., Bianchi, M. E., Blagosklonny, M. V., Blander, J. M., Blandino, G., Blomgren, K., Borner, C., Bortner, C. D., Bove, P., Boya, P., Brenner, C., Broz, P., Brunner, T., Damgaard, R. B., Calin, G. A., Campanella, M., Candi, E., Carbone, M., Carmona-Gutierrez, D., Cecconi, F., Chan, F. K. M., Chen, G. Q., Chen, Q., Chen, Y. H., Cheng, E. H., Chipuk, J. E., Cidlowski, J. A., Ciechanover, A., Ciliberto, G., Conrad, M., Cubillos-Ruiz, J. R., Czabotar, P. E., DAngiolella, V., Daugaard, M., Dawson, T. M., Dawson, V. L., De Maria, R., De Strooper, B., Debatin, K. M., Deberardinis, R. J., Degterev, A., Del Sal, G., Deshmukh, M., Di Virgilio, F., Diederich, M., Dixon, S. ...
Octopodiformes Medicine & Life Sciences 100% * Aneurysm Medicine & Life Sciences 60% * Endoleak Medicine & Life Sciences 22% ...
Octopodiformes Medicine & Life Sciences 52% * Biomimetics Medicine & Life Sciences 15% * Intelligence Medicine & Life Sciences ...
  • Octopodiformes is a superorder of the subclass Coleoidea, comprising the octopuses and the vampire squid. (wikipedia.org)
  • 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). (wikipedia.org)