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The order Discosorida is an order that is mostly filled by nautiloids. Not very many species have been identified in Discosroida because most of the animals in the family and other related families live deep in the ocean where hardly any scientific research has been done. Scientific classification or biological classification is a method by which biologists group and categorize species of organisms. ... Animalia redirects here. ... Classes Caudofoveata Aplacophora Polyplacophora Monoplacophora Bivalvia Scaphopoda Gastropoda Cephalopoda †Rostroconchia The mollusks or molluscs are the large and diverse phylum Mollusca, which includes a variety of familiar creatures well-known for their decorative shells or as seafood. ... Orders Sepiida Sepiolida Spirulida Teuthida Octopoda Vampyromorphida Nautilida The Cephalopods (head-foot) are the mollusc class Cephalopoda characterized by bilateral body symmetry, a prominent head, and a modification of the mollusc foot into the form of arms or tentacles. ... Orders Nautilida Bactrida Nautiloids are a group of marine animals which all possess an external shell, the most well known example being the modern nautiluses. ... Orders Nautilida Bactrida Nautiloids are a group of marine animals which all possess an external shell, the most well known example being the modern nautiluses. ...
Nautiloids
The marineanimals in Discosorida are mainly soft shelled and rise and fall in the water by pumping gas into separate chambers in their shell. They have the ability to go without food for up to a month and their cousins, the octopus are now their enemies after a long period of evolution. Nautilids have chemical detecting tentacles that help them find their favorite foods; shrimp, small fish and crustacians. Nautilids live in depths of about 300m coming to 100m to feed at night. The nautilid's soft shell cannot withstand much deeper than 750m. Marine is an umbrella term for things relating to the ocean, as with Marine biology, Marine geology, and as a term for a navy, etc. ... The word Animals when used alone has several possible meanings in the English language. ... Suborders †Pohlsepia (incertae sedis) †Proteroctopus (incertae sedis) †Palaeoctopus (incertae sedis) Cirrina Incirrina Synonyms Octopoida Leach, 1817 The octopus (Greek , eight-legs) is a cephalopod of the order Octopoda that inhabits many diverse regions of the ocean, especially coral reefs. ... Superfamilies Alpheoidea Atyoidea Bresilioidea Campylonotoidea Crangonoidea Galatheacaridoidea Nematocarcinoidea Oplophoroidea Palaemonoidea Pandaloidea Pasiphaeoidea Procaridoidea Processoidea Psalidopodoidea Stylodactyloidea True shrimp are swimming, decapod crustaceans classified in the infraorder Caridea, found widely around the world in both fresh and salt water. ...
Cyrtochoanitic cyrtoceracones, the siphuncles broadly expanded from an earlier stage, in contrast to the oncoceroids which are primitively suborthochoanitic in early stages.
Discosorida shell forms vary generally within relatively narrow limits, being mostly breviconic cyrtocones, either endogastrically or exogastrically curved, with only a few deviations from this model, such as the faintly torticonic Endoplectoceras.
The Discosorida formed a very distinctive and well-defined characters, but there no clear evolutionary trends are discernible in their history.
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