frilled shark length

[21] At the throat, there are six pairs of long gill slits; the first pair of gill slits form a collar, while the extended tips of the gill filaments create a fleshy frill, hence, the frilled shark name of this fish. Its three-pronged teeth are very primitive and only otherwise seen in fossils." [3], The zoologist Ludwig Döderlein first identified, described, and classified the frilled shark as a discrete species of shark. The shark's short snout is lined with about 300 teeth, lined up into 25 rows. [16][30] Throughout embryonic development, the size of the yolk sac remains constant, until the shark embryo is 40 cm (16 in) long, whereupon the sac shrinks until disappearing when the embryo has grown to 50 cm (20 in) in length. When hunting food, the frilled shark moves like an eel, bending and lunging to capture and swallow whole prey with its long and flexible jaws, which are equipped with 300 recurved, needle-like teeth. Some call it a “living fossil” and “the king of the underwater world”. Feeds on other sharks, squid and bony fish (Ref. Because this shark lives deep in the ocean, it is rarely seen. Litter sizes range from two to 15. His accoun… Squid is however, the main component of its diet. The family and genus have one living species, with the frilled shark, Chlamydoselachus anguineus Garman, 188 4, a medium-sized shark that reaches at least 1.96 m total length That from the Late Paleocene epoch (66–56 mya) until the contemporary era, other species of sharks out-matched the Chlamydoselachus sharks in competition for feeding grounds and living space, which restricted their geographic distribution to the deep-water ocean. africana. But it is its teeth that earn this fish a place on this list. africana, and the width of the mouth is more narrow. "Named for the frill shape of its six large gills, it has only one dorsal fin. [8] From that anatomy, Garman proposed that the frilled shark was related to the cladodont sharks of the Cladoselache genus that existed during the Devonian period (419–359 mya) in the Palaeozoic era (541–251 mya). [2], Reproductively, the two species of frilled shark, C. anguineus and C. africana, are aplacental viviparous animals, born of an egg, without a placenta to the mother shark. The broad, flattened head, rounded fins, and sinuous body may have inspired the sea serpent legend. [17], In hunting and eating prey that are tired or exhausted or dying (after spawn),[17] the frilled shark curves and coils its anguilline body, and braces its rear fins against a hard surface, for leverage to effect a rapid-strike bite that captures the prey. Frilled sharks are aplacental viviparous, which means their young develop inside eggs within the mother's uterus until they are ready to be born. The frilled-shark embryo is 3.0 cm (1.2 in) long, has a pointed head, slightly developed jaws, nascent external gills, and possesses all fins. During gestation, the shark embryos develop in membranous egg-cases contained within the body of the mother shark, when the infant sharks emerge from their egg capsules in the uterus they feed on yolk until birth. Frilled shark feeds on octopus, squid, bony fish and other smaller species of sharks. Its cartilaginous skeleton is only weakly calcified, making it lightweight. "Could this shark be behind the legends of giant sea serpents heard in many parts of the world? The nostrils are vertical slits, separated by a flap of skin that forms the incurrent opening and the excurrent opening. The common name of the frilled shark refers to the animal's gills, which form a red fringe around its neck. [15] The wide gape of the distended, long jaws allows devouring whole prey that are more than half the size of the frilled shark, itself.

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