Camera (cephalopod) (original) (raw)

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dbo:abstract Camerae (singular camera) are the spaces or chambers enclosed between two adjacent septa in the phragmocone of a nautiloid or ammonoid cephalopod molluscus. These can be seen in cross-sections of a nautilus shell and in the polished cross-sections of ammonites. In life these chambers are filled with gas, mediated by the siphuncle, and used to control buoyancy. Some Palaeozoic nautiloid genera, especially those with long, straight shells, are distinguished by cameral deposits. These were accumulations of calcium carbonate secreted in the empty chambers of the shell, used for ballast and control of buoyancy. The nature and form of these deposits are very useful in nautiloid classification. (en)
dbo:thumbnail wiki-commons:Special:FilePath/NautilusCutawayLogarithmicSpiral.jpg?width=300
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dbo:wikiPageWikiLink dbr:Calcium_carbonate dbc:Cephalopod_zootomy dbr:File:NautilusCutawayLogarithmicSpiral.jpg dbr:Orthocone dbr:Cephalopod dbr:Ammonoidea dbr:Buoyancy dbr:Nautiloid dbr:Nautilus dbr:Phragmocone dbr:Siphuncle dbr:Palaeozoic dbr:Ballast_tanks dbr:Septa_(biology)
dbp:wikiPageUsesTemplate dbt:Cite_journal dbt:Cephalopod_anatomy
dcterms:subject dbc:Cephalopod_zootomy
gold:hypernym dbr:Spaces
rdf:type dbo:AnatomicalStructure
rdfs:comment Camerae (singular camera) are the spaces or chambers enclosed between two adjacent septa in the phragmocone of a nautiloid or ammonoid cephalopod molluscus. These can be seen in cross-sections of a nautilus shell and in the polished cross-sections of ammonites. In life these chambers are filled with gas, mediated by the siphuncle, and used to control buoyancy. (en)
rdfs:label Camera (cephalopod) (en)
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foaf:depiction wiki-commons:Special:FilePath/NautilusCutawayLogarithmicSpiral.jpg
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is dbo:wikiPageRedirects of dbr:Camera_(anatomy) dbr:Cameral_deposit
is dbo:wikiPageWikiLink of dbr:Belemnitida dbr:Braulioceras dbr:Camera_(disambiguation) dbr:Endocerida dbr:Patterns_in_nature dbr:Septum_(cephalopod) dbr:Ammonoidea dbr:Nautiloid dbr:Nautilus dbr:Phragmocone dbr:Siphuncle dbr:Uranoceratidae dbr:Camera_(anatomy) dbr:Cameral_deposit
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