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In the course of pregnancy, the embryo's average rate-of-growth is 1.40 cm (0.55 in) per month until birth, when the shark pups are 40–60 cm (16–24 in) long, therefore, the frilled shark's gestation period can be as long as 3.5 years; [16] [15] at birth, a frilled shark's litter comprises 2–15 pups, with an average litter comprises 6.0 pups.
The southern African frilled shark is found from off the coast of southern Angola to Namibia and South Africa. [3] Frilled sharks have also been captured off South Africa, at 1,230–1,400 m (4,040–4,590 ft) deep off Eastern Cape Province, and at 300 m (980 ft) deep off KwaZulu-Natal Province; it is uncertain whether these specimens are C. africana.
It contains two extant and four extinct species. The most widely known species still surviving is the frilled shark (Chlamydoselachus anguineus). It is known as a living fossil, along with Chlamydoselachus africana, also known as the southern African frilled shark, which is only found along coastal areas of South Africa. The only two extant ...
Most shark reports concern the more common varieties, but there are more than 400 known species of sharks, and some of them are very rare. Frilled sharks, often called 'living fossils' are one of ...
They are now represented only by two extant species in the genus Chlamydoselachus: the frilled shark (C. anguineus) and the Southern African frilled shark (C. africana). However, they are thought to have been more diverse during the Late Cretaceous , where all three extant and extinct genera are known, and one other genus ( Rolfodon ) survived ...
Get excited for the 35th official Shark Week, from July 23 to July 29, with these shark facts. Sharks are millions of years older than dinosaurs and 5 other facts that may surprise you Skip to ...
Reproductively, the frilled shark is an aplacental viviparous animal born from an egg, without a placenta to the mother shark. 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. The ...
Yoko, a baby swell shark, swims in a tank at Shreveport Aquarium in Shreveport, Louisiana. The shark hatched from an egg on Jan. 3, 2025. Aquarium staff are unsure how the egg came to be, as ...