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- Cephalopod_beak abstract "All extant cephalopods have a two-part beak, or rostrum, situated in the buccal mass and surrounded by the muscular head appendages. The dorsal (upper) mandible fits into the ventral (lower) mandible and together they function in a scissor-like fashion. Composed primarily of chitin and cross-linked proteins, beaks are more-or-less indigestible and are often the only identifiable cephalopod remains found in the stomachs of predatory species such as sperm whales. They can be used to estimate the mantle length and total body weight of the original animal as well as the total ingested biomass of the species. Cephalopod beaks gradually become less stiff as one moves from the tip to the base, a gradient that results from differing chemical composition. In hydrated beaks of the Humboldt squid (Dosidicus gigas) this stiffness gradient spans two orders of magnitude.Fossilised remains of beaks are known from a number of cephalopod groups, both extant and extinct, including squids, octopuses, belemnites, and vampyromorphs. Aptychi – paired plate-like structures found in ammonites – may also have been jaw elements.The beak may also be referred to as the mandibles or jaws.".
- Cephalopod_beak thumbnail Squid_beak_measuring.jpg?width=300.
- Cephalopod_beak wikiPageExternalLink view_etd?URN=etd-0421103-214602.
- Cephalopod_beak wikiPageExternalLink 1926.
- Cephalopod_beak wikiPageExternalLink 219.
- Cephalopod_beak wikiPageExternalLink science-reports-6.pdf.
- Cephalopod_beak wikiPageExternalLink cephalopod-beak-guide.pdf.
- Cephalopod_beak wikiPageExternalLink 24_41-48_Xavier_etal%20.pdf.
- Cephalopod_beak wikiPageExternalLink Docum_01922.pdf.
- Cephalopod_beak wikiPageID "34311891".
- Cephalopod_beak wikiPageLength "14579".
- Cephalopod_beak wikiPageOutDegree "27".
- Cephalopod_beak wikiPageRevisionID "572414266".
- Cephalopod_beak wikiPageWikiLink Ammonoidea.
- Cephalopod_beak wikiPageWikiLink Anatomical_terms_of_location.
- Cephalopod_beak wikiPageWikiLink Aptychus.
- Cephalopod_beak wikiPageWikiLink Belemnitida.
- Cephalopod_beak wikiPageWikiLink Biomass.
- Cephalopod_beak wikiPageWikiLink Category:Cephalopod_zootomy.
- Cephalopod_beak wikiPageWikiLink Cephalopod.
- Cephalopod_beak wikiPageWikiLink Cephalopod_limb.
- Cephalopod_beak wikiPageWikiLink Chiroteuthis_picteti.
- Cephalopod_beak wikiPageWikiLink Chitin.
- Cephalopod_beak wikiPageWikiLink Decapodiformes.
- Cephalopod_beak wikiPageWikiLink Digestive_system_of_gastropods.
- Cephalopod_beak wikiPageWikiLink Humboldt_squid.
- Cephalopod_beak wikiPageWikiLink Mandible.
- Cephalopod_beak wikiPageWikiLink Mantle_(mollusc).
- Cephalopod_beak wikiPageWikiLink Neontology.
- Cephalopod_beak wikiPageWikiLink Octopodiformes.
- Cephalopod_beak wikiPageWikiLink Octopus.
- Cephalopod_beak wikiPageWikiLink Order_of_magnitude.
- Cephalopod_beak wikiPageWikiLink Protein.
- Cephalopod_beak wikiPageWikiLink Sperm_whale.
- Cephalopod_beak wikiPageWikiLink Squid.
- Cephalopod_beak wikiPageWikiLink Teuthology.
- Cephalopod_beak wikiPageWikiLink Vampyromorphida.
- Cephalopod_beak wikiPageWikiLink File:Extracted_giant_squid_beak.jpg.
- Cephalopod_beak wikiPageWikiLink File:Squid_beak_measuring.jpg.
- Cephalopod_beak wikiPageWikiLinkText "Beak".
- Cephalopod_beak wikiPageWikiLinkText "Cephalopod beak".
- Cephalopod_beak wikiPageWikiLinkText "Jaws".
- Cephalopod_beak wikiPageWikiLinkText "beak".
- Cephalopod_beak wikiPageWikiLinkText "beak-like jaws".
- Cephalopod_beak wikiPageWikiLinkText "beak-like mouthparts".
- Cephalopod_beak wikiPageWikiLinkText "beaks".
- Cephalopod_beak wikiPageWikiLinkText "cephalopod beak".
- Cephalopod_beak wikiPageWikiLinkText "horny beak".
- Cephalopod_beak wikiPageWikiLinkText "jaw-piece".
- Cephalopod_beak wikiPageWikiLinkText "jaws".
- Cephalopod_beak wikiPageWikiLinkText "parrot-like beak".
- Cephalopod_beak wikiPageWikiLinkText "two-part beak".
- Cephalopod_beak wikiPageUsesTemplate Template:3d_glasses.
- Cephalopod_beak wikiPageUsesTemplate Template:Cephalopod_anatomy.
- Cephalopod_beak wikiPageUsesTemplate Template:Commons_category.
- Cephalopod_beak wikiPageUsesTemplate Template:DOI.
- Cephalopod_beak wikiPageUsesTemplate Template:Gallery.
- Cephalopod_beak wikiPageUsesTemplate Template:PDFlink.
- Cephalopod_beak wikiPageUsesTemplate Template:Refbegin.
- Cephalopod_beak wikiPageUsesTemplate Template:Refend.
- Cephalopod_beak wikiPageUsesTemplate Template:Reflist.
- Cephalopod_beak subject Category:Cephalopod_zootomy.
- Cephalopod_beak comment "All extant cephalopods have a two-part beak, or rostrum, situated in the buccal mass and surrounded by the muscular head appendages. The dorsal (upper) mandible fits into the ventral (lower) mandible and together they function in a scissor-like fashion. Composed primarily of chitin and cross-linked proteins, beaks are more-or-less indigestible and are often the only identifiable cephalopod remains found in the stomachs of predatory species such as sperm whales.".
- Cephalopod_beak label "Cephalopod beak".
- Cephalopod_beak sameAs Q5063313.
- Cephalopod_beak sameAs Peteiro_dos_cefalópodos.
- Cephalopod_beak sameAs m.0hzqddm.
- Cephalopod_beak sameAs Q5063313.
- Cephalopod_beak wasDerivedFrom Cephalopod_beak?oldid=572414266.
- Cephalopod_beak depiction Squid_beak_measuring.jpg.
- Cephalopod_beak isPrimaryTopicOf Cephalopod_beak.