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)...

needed] The cephalopod beak resembles that of a parrot. It is a tough structure made of chitin and marks the beginning of the cephalopod's digestive system...

0273 Wolff, G.A. (1981). A beak key for eight eastern tropical Pacific cephalopod species with relationships between their beak dimensions and size. Fishery...

A cephalopod /ˈsɛfələpɒd/ is any member of the molluscan class Cephalopoda /sɛfəˈlɒpədə/ (Greek plural κεφαλόποδες, kephalópodes; "head-feet") such as...

echidnas and platypuses, which have a beak-like structure), sirens, pufferfish, billfishes and cephalopods. Although beaks vary significantly in size, shape...

All cephalopods possess flexible limbs extending from their heads and surrounding their beaks. These appendages, which function as muscular hydrostats...

refer to: Beak (bivalve), the oldest point on a bivalve mollusc's shell Beak (botany), a pointed projection on various plant parts Cephalopod beak, an 'inkfish'...

officer, in the US Navy Upper reference limit Upper rostral length, of a cephalopod beak Urali language (ISO 639-3: url) University Ramon Llull, university...

in the chitin-protein complexes of the beak, pen, sucker disc, radula and oesophageal cuticle of cephalopods". Comparative Biochemistry and Physiology...

Atlas of cephalopod distribution in the Southern Ocean". Antarctic Science 11:61-62. online version Xavier, J.C. & Y. Cherel (2009). "Cephalopod Beak Guide...

exoskeletons of arthropods such as crustaceans and insects, the radulae, cephalopod beaks and gladii of molluscs and in some nematodes and diatoms. It is also...

The Cuvier's beaked whale, goose-beaked whale, or ziphius (Ziphius cavirostris) is the most widely distributed of all beaked whales in the family Ziphiidae...

barnacles. Like all cephalopods, squids are predators and have complex digestive systems. The mouth is equipped with a sharp, horny beak mainly made of chitin...

crest length, is mentioned in A Handbook for the Identification of Cephalopod Beaks. A. argo is cosmopolitan, occurring in tropical and subtropical waters...

rostrum. Gastropod molluscs have a rostrum or proboscis. Cephalopod molluscs have hard beak-like mouthparts referred to as the rostrum. Invertebrate rostrums...

gas-filled chambers present in chambered nautilus shells and is not a true cephalopod shell, but rather an evolutionary innovation unique to the genus. It is...

this species. Studies measuring the δ15N content of the chitinous beaks of cephalopods to determine trophic ecology levels have demonstrated that the colossal...

cuttlefish, and nautiloids. Like other cephalopods, an octopus is bilaterally symmetric with two eyes and a beaked mouth at the center point of the eight...

beak, as in other cephalopods.[citation needed] Giant squid have small fins at the rear of their mantles used for locomotion. Like other cephalopods,...

been strong enough to breach the prey's exoskeleton or shell. Modern cephalopods beaks contain a radula, or 'toothed' tongue, which is used to rasp out soft...

fish, and about 10 percent was cephalopods. The researchers concluded that the number of fish otoliths and cephalopod beaks indicated the importance of these...

ναυτίλος nautílos 'sailor') is an ancient pelagic marine mollusc of the cephalopod family Nautilidae. The nautilus is the sole extant family of the superfamily...

Naturelle (ser. 4)17(3–4): 307–343. Lu, C.C. & R. Ickeringill (2002). Cephalopod beak identification and biomass estimation techniques: tools for dietary...

dofleini), also known as the North Pacific giant octopus, is a large marine cephalopod belonging to the genus Enteroctopus and Enteroctopodidae family. Its spatial...

between cuttlefish and almost all other cephalopods allows them to produce venom, excreting it through their beak to help kill their prey. Additionally...

include the blue shark, Hawaiian monk seal, sperm whale, and swordfish. Cephalopod size Allcock, L. (2014). "Haliphron atlanticus". IUCN Red List of Threatened...

Ammonoids are extinct spiral shelled cephalopods comprising the subclass Ammonoidea. They are more closely related to living coleoids (i.e., octopuses...

pinniped diets: Accounting for complete digestion of otoliths and cephalopod beaks". Canadian Journal of Fisheries and Aquatic Sciences. 57 (5): 898–905...

stranded specimens included anchovy (Engraulis sp.), stomatopods, cephalopod beaks (Sepia sp.) and a half digested ornate cowfish (Aracana ornata). Little...

acute and chronic pain. Severe beak trimming, or beak trimming birds at an older age, may cause chronic pain. Following beak trimming of older or adult hens...