About: Cirrate shell

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Cirrate octopuses possess a well-developed internal shell that supports their muscular swimming fins. This is in contrast to the more familiar, finless, incirrate octopuses, in which the shell remnant is either present as a pair of stylets or absent altogether. The cirrate shell is quite unlike that of any other living cephalopod group and has its own dedicated set of descriptive terms. It is usually roughly arch- or saddle-shaped and is rather soft, being similar in consistency to cartilage. Each of the eight extant cirrate genera is characterised by a distinct shell morphology:

Attributes	Values
rdf:type	yago:WikicatOctopuses yago:Food107555863 yago:Matter100020827 yago:Octopus107782365 yago:PhysicalEntity100001930 yago:Seafood107776866 yago:Solid115046900
rdfs:label	Cirrate shell (en)
rdfs:comment	Cirrate octopuses possess a well-developed internal shell that supports their muscular swimming fins. This is in contrast to the more familiar, finless, incirrate octopuses, in which the shell remnant is either present as a pair of stylets or absent altogether. The cirrate shell is quite unlike that of any other living cephalopod group and has its own dedicated set of descriptive terms. It is usually roughly arch- or saddle-shaped and is rather soft, being similar in consistency to cartilage. Each of the eight extant cirrate genera is characterised by a distinct shell morphology: (en)
foaf:depiction
dcterms:subject	Cephalopod zootomy Octopuses
Wikipage page ID	40854782 (xsd:integer)
Wikipage revision ID	1118577876 (xsd:integer)
Link from a Wikipage to another Wikipage	Cephalopod zootomy Genus Cirroteuthidae Cryptoteuthis Opisthoteuthis Stauroteuthidae Stauroteuthis Stylet (anatomy) Octopuses Late Cretaceous Cirrina Cirroctopus Cirroteuthis Cirrothauma Grimpoteuthis Incirrina Opisthoteuthidae Cartilage Cephalopod fin Luteuthis Palaeoctopus newboldi Derived trait Plesiomorphy dbr:Stylet_(octopus)
sameAs	Cirrate shell Cirrate shell Cirrate shell Cirrate shell
dbp:wikiPageUsesTemplate	dbt:Refbegin dbt:Refend dbt:Reflist dbt:Cephalopod_anatomy
thumbnail	wiki-commons:Special:FilePath/Grimpoteuthis_innominata_73_mm_ML.jpg?width=300
has abstract	Cirrate octopuses possess a well-developed internal shell that supports their muscular swimming fins. This is in contrast to the more familiar, finless, incirrate octopuses, in which the shell remnant is either present as a pair of stylets or absent altogether. The cirrate shell is quite unlike that of any other living cephalopod group and has its own dedicated set of descriptive terms. It is usually roughly arch- or saddle-shaped and is rather soft, being similar in consistency to cartilage. Each of the eight extant cirrate genera is characterised by a distinct shell morphology: * Cirroteuthidae * Cirroteuthis — saddle-shaped, with large wings * Cirrothauma — butterfly-shaped * Opisthoteuthidae * Cirroctopus — V-shaped, lateral wings tapering to fine points * Cryptoteuthis — U-shaped, each lateral wing ending in broad lobe with pointed projection * Grimpoteuthis — U-shaped, lateral wings ending bluntly * Luteuthis — W-shaped * Opisthoteuthis — U-shaped, lateral wings usually tapering to fine points but termination complex in certain species * Stauroteuthidae * Stauroteuthis — U-shaped The comparatively simple shells of Opisthoteuthidae and Stauroteuthidae are thought to approximate the ancestral shape, with those of Cirroteuthidae being more derived. The shell of Cirroctopus appears transitional in form between those of incirrate octopuses and other cirrates, and resembles the reduced shell of the Late Cretaceous Palaeoctopus newboldi. The paired, rod-shaped of incirrates are evolutionarily derived from the lateral wings and horns of the cirrate shell. (en)
prov:wasDerivedFrom	wikipedia-en:Cirrate_shell?oldid=1118577876&ns=0
page length (characters) of wiki page	4662 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:Cirrate_shell
is rdfs:seeAlso of	Cephalopod
is Link from a Wikipage to another Wikipage of	Stauroteuthis gilchristi Opisthoteuthis Opisthoteuthis borealis Cephalopod Cephalopod size Cirrina Cirroctopus antarctica Cirroctopus glacialis Cirrothauma magna Grimpoteuthis abyssicola Grimpoteuthis boylei Grimpoteuthis challengeri Grimpoteuthis hippocrepium Grimpoteuthis innominata Grimpoteuthis meangensis Grimpoteuthis tuftsi Grimpoteuthis wuelkeri Octopus Opisthoteuthis albatrossi Stauroteuthis syrtensis
is foaf:primaryTopic of	wikipedia-en:Cirrate_shell

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