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The grey reef shark or gray reef shark (Carcharhinus amblyrhynchos, sometimes misspelled amblyrhynchus or amblyrhinchos) [2] is a species of requiem shark, in the family Carcharhinidae. One of the most common reef sharks in the Indo-Pacific , it is found as far east as Easter Island and as far west as South Africa .
Common name Scientific name Geographic range Conservation status IUCN Red List Length Image Blacknose shark: Carcharhinus acronotus (Poey, 1860) Endangered 1.3 m (4.3 ft) Silvertip shark: Carcharhinus albimarginatus (Rüppell, 1837) Vulnerable 2–2.5 m (6.6–8.2 ft) maximum 3 m (9.8 ft) Bignose shark: Carcharhinus altimus (S. Springer, 1950)
Shark teeth are strong and made of enamel. Many sharks have 3 rows of teeth. These teeth are embedded in the gums, not the jaw. [10] Sharks are born with teeth that are constantly being replaced. Teeth are replaced every two weeks, approximately. [10] The shape of the teeth determine the diet of the shark.
The common name requiem shark may be related to the French word for shark, requin, which is itself of disputed etymology.One derivation of the latter is from Latin requiem ("rest"), which would thereby create a cyclic etymology (requiem-requin-requiem), but other sources derive it from the Old French verb reschignier ("to grimace while baring teeth").
The really dark shark teeth, Dunn said, are millions of years old and more commonly found. The lighter teeth, beige or pearly in color, fell out more recently.
This article lists several species of reef-associated sharks which are known by the common name reef sharks. In the Indian and Pacific Oceans: Blacktip reef shark; Grey reef shark; Whitetip reef shark; In the Atlantic and Pacific Oceans: Galapagos shark; In the Atlantic Ocean: Caribbean reef shark
Shark teeth are among the quintessential items found in almost Grand Strand gift shop. But they’re also ripe for the picking along the beach — if you know where to look.
Any fossils, including fossil shark teeth, are preserved in sedimentary rocks after falling from their mouth. [13] The sediment that the teeth were found in is used to help determine the age of the shark tooth due to the fossilization process. [15] Shark teeth are most commonly found between the Upper Cretaceous and Tertiary periods. [16]