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In 2020, Cooper and his colleagues reconstructed a 2D model of megalodon based on the dimensions of all the extant lamnid sharks and suggested that a 16 meters (52 ft) long megalodon would have had a 4.65 m (15.3 ft) long head, 1.41 m (4 ft 8 in) tall gill slits, a 1.62 m (5 ft 4 in) tall dorsal fin, 3.08 m (10 ft 1 in) long pectoral fins, and ...
The largest known prehistoric snake is Titanoboa cerrejonensis, estimated at 12.8 m (42 ft) or even 14.3 m (47 ft) [261] in length and 1,135 kg (2,502 lb) in weight, [262] and madtsoiid Vasuki indicus which is estimated to reach between 11–15 m (36–49 ft). [263]
In 2002, Stephen Wroe considerably downsized megalania, suggesting a maximum total length of 4.5 m (15 ft) and a weight of 331 kg (730 lb) with average total lengths of 3.45 m (11.3 ft) and 97–158 kg (214–348 lb), [12] decrying the earlier maximum length estimate of 7 m (23 ft) as exaggerations based on flawed methods. In 2009, however ...
The largest carnivorous bird was Brontornis, an extinct flightless bird from South America which reached a weight of 350 to 400 kg (770 to 880 lb) and a height of about 2.8 m (9 ft 2 in). [177] The tallest carnivorous bird was Kelenken , which could reach 3 to 3.2 meters in height and 220 to 250 kilograms.
It can grow up to a 5.2 m (17 ft) disk width, a total length of 6.5 m (21 ft) and a weight of at least 1,000 kg (2,200 lb). [ 45 ] [ 46 ] The largest stingray is generally accepted to be the short-tail stingray ( Dasyatis brevicaudata ), found off the southern tip of Africa and Australasia, at up to 4.3 m (14 ft) across the disk and weighing ...
The largest and widest tooth available to Perez et al., GHC 6 (13.3 cm (5.2 in) crown width), produced estimates ranging from 17.4 to 24.2 meters (57 to 79 ft) with a mean estimate of 20.3 metres (67 ft). Cooper et al. (2022) digitised a megalodon vertebral column of ~150 vertebrae, IRSNB P 9893, and attempted a 3d reconstruction of O ...
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Weight estimates based on the revised length are as high as 38 metric tons (42 short tons) [15] although more recently, and according to Gregory S. Paul, a 29 m (95 ft) long D. hallorum was estimated to weigh 23 metric tons (25 short tons) in body mass. [10]