| Amphioctopus | |
|---|---|
 | |
| Veined Octopus, Amphioctopus marginatus | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Order: | Octopoda |
| Family: | Octopodidae |
| Genus: | Amphioctopus Fischer, 1882 |
| Type species | |
| Octopus membranaceus | |
| Species | |
See text | |
| Synonyms | |
| |
Amphioctopus is a genus of octopuses comprising around 16 species.
Members of the genus Amphioctopus reside in tropical and subtropical waters. These octopuses are found primarily in the Pacific and Indian Oceans but representatives can also be found in the Atlantic. They are characterized by arms that are about two or three times their mantle length with deep lateral webs and very shallow dorsal webs. [1] This genus can be further divided into two subgroups, one group with ocellate octopuses, the other with non-ocellate octopuses. [2]
Historically, members of this genus were placed within the genus Octopus , but recognized as forming a distinct group and referred to as the Octopus aegina species complex. [3] The genus was originally described by Fischer in 1882. He assigned to it the already described species, Octopus membranaceus (Quoy and Gaimard, 1832), as the type species (not to be confused with Enteroctopus membranaceus (Rochebrune and Mabille, 1889), the original types species of the genus Enteroctopus ). Robson in his review of octopus taxonomy in 1929 regarded Amphioctopus membranaceus as a nomen dubium , referring it to his newly named "aegina species complex", a group of octopuses forming a distinct constellation characterized by Octopus aegina. The genus Amphioctopus was subsequently considered invalid. In 2002, Gleadall suggested that the aegina species group represents a distinct genus with Amphioctopus being the senior name. In 2004, Gleadall resurrected the genus Schizoctopus and assigned Octopus fangsiao as the type species. [4] In 2005, Huffard and Hochberg, arguing that Robson's designation of Octopus membranaceus as a nomen dubium was premature and considering it a valid name, resurrected the genus name Amphioctopus for the Octopus aegina species complex. Huffard and Hochberg also found Schizoctopus to be a junior synonym for Amphioctopus. [3]
Species marked with an asterisk (*) remain unresolved.
Trachodon is a dubious genus of hadrosaurid dinosaur based on teeth from the Campanian-age Upper Cretaceous Judith River Formation of Montana, U.S. It is a historically important genus with a convoluted taxonomy that has been all but abandoned by modern dinosaur paleontologists.
Enteroctopus is an octopus genus whose members are sometimes known as giant octopus.
Ferganocephale is a dubious genus of neornithischian dinosaur. It was from the Middle Jurassic Balabansai Svita of Kyrgyzstan. The type and only species is F. adenticulatum.
Mandschurosaurus is a genus of hadrosaurs based on material from the Upper Cretaceous of China.
Octopus is the largest genus of octopuses, comprising more than 100 species. These species are widespread throughout the world's oceans. Many species formerly placed in the genus Octopus are now assigned to other genera within the family. The octopus has 8 arms, averaging 20 cm long for an adult. Octopodidae.
Palaeosaurus is a genus of indeterminate archosaur known from two teeth found in either the Magnesian Conglomerate or the Avon Fissure Fill of Clifton, Bristol, England. It has had a convoluted taxonomic history.
Diclonius is a genus of dinosaur from the Late Cretaceous. It was a hadrosaur based solely on teeth. Its fossils were found in the Judith River Formation of Montana, northern US. The name is in reference to the method of tooth replacement, in which newly erupting replacement teeth could be in functional use at the same time as older, more worn teeth. Thus, the number of "sprouting" teeth was doubled in comparison to Monoclonius, which used only one set of teeth at a time and which Cope named in the same paper.
Amphioctopus marginatus, also known as the coconut octopus and veined octopus, is a medium-sized cephalopod belonging to the genus Amphioctopus. It is found in tropical waters of the western Pacific Ocean. It commonly preys upon shrimp, crabs, and clams, and displays unusual behavior including bipedal walking and tool use.
Velodona togata is a species of octopus in the monotypic genus Velodona. First described by Carl Chun in 1915, with a second subspecies discovered by Guy Coburn Robson in 1924, it was named for the distinctive membranes on its arms.
Abdopus is a genus of octopuses in the family Octopodidae.
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.
Ptenodactylus is a scientific name which has been used for several distinct genera of animals. It may refer to:
Enteroctopus megalocyathus, also known as Patagonian red octopus (EN), Pulpo del sur (Chile) and Pulpo colorado (Argentina); is a medium-sized octopus, and the type species for the genus Enteroctopus.
Callistoctopus macropus, also known as the Atlantic white-spotted octopus, white-spotted octopus, grass octopus or grass scuttle, is a species of octopus found in shallow areas of the Mediterranean Sea, the warmer parts of the eastern and western Atlantic Ocean, the Caribbean Sea, and the Indo-Pacific region. This octopus feeds on small organisms which lurk among the branches of corals.
Amphioctopus fangsiao, called webfoot octopus, is a species of octopus, a cephalopod belonging to the genus Amphioctopus. It is found in the Pacific Ocean, including off the coasts of New Zealand as well as in the Yellow Sea and surrounding Chinese shores. It is also commercially fished.
This is a list of terms and symbols used in scientific names for organisms, and in describing the names. For proper parts of the names themselves, see List of Latin and Greek words commonly used in systematic names. Note that many of the abbreviations are used with or without a stop.
Octopoteuthis is a genus of squid. It is one of two genera in the family Octopoteuthidae, the other being Taningia. Both Octopoteuthis and Taningia are characterized by their lack of tentacles for the majority of their life cycle, and have traits characteristic of both squids and octopods. The species limits of the genus are in need of further research, for example some authorities have stated that the Mediterranean species Octopoteuthis sicula is apparently the senior synonym of Octopoteuthis danae and that it is very closely related to, or possibly conspecific with, Octopoteuthis megaptera.
Pinnoctopus cordiformis is a species of octopus found around the coasts of New Zealand.
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.
Several members of Amphioctopus may represent species complexes that require additional attention or detailed redescription, in particular: A. fangsiao (Gleadall, 2004), A. granulatus, and A. marginatus. Many members of this group are undescribed or poorly described despite their high fisheries potential in some tropical regions of the world.