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However, at least one study found that the photos and measurements did not rule out these reported size estimates. [ 9 ] [ 10 ] • The whale shark ( Rhincodon typus ): the larger silhouette is scaled to 15 metres (49 ft) precaudal length (est. 18.8 metres (62 ft) total length), based on a whale shark measured in 2001. [ 11 ]
[12] [13] The thresher shark has a short head and a cone-shaped nose. The mouth is generally small, and the teeth range in size from small to large. [14] By far the largest of the three species is the common thresher, Alopias vulpinus, which may reach a length of 6.1 metres (20 ft) and a mass of over 500 kilograms (1,100 lb).
English: The size and growth of the whale shark (Rhincodon typus), represented by various individuals reported in the literature.A small 55 centimetres (22 in) pup, a 5.62 metres (18.4 ft) juvenile, a generic 9 metres (30 ft) young adult, a large 12.1 metres (40 ft) adult, and an exceptionally large adult with a precaudal length of 15 metres (49 ft).
The confirmed length record for this shark is 5.7 m (19 ft), while the maximum possible length may be 6.1–6.5 m (20–21 ft). [3] The heaviest individual on record is a 4.8 m (16 ft) female that weighed 510 kg (1,120 lb). [11] Exceptional specimens may possibly weigh up to 900 kg (2,000 lb), though such claims are not verified yet. [12]
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 teeth are moderately large with a single, narrow cusp. [6] There are 19–24 teeth in the upper jaw and 20–24 teeth in the lower jaw; their shapes are similar in both jaws. There are large and small dermal denticles , with the smaller ones more numerous and interspersed amongst the larger ones.
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Otodus megalodon teeth are the largest of any shark, extinct or living, and are among the most sought after types of shark teeth in the world. This shark lived during the late Oligocene epoch and Neogene period, about 28 to 1.5 million years ago, and ranged to a maximum length of 60 ft. [ 13 ] The smallest teeth are only 1.2 cm (0.5 in) in ...