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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 great white and other large predators either swallow small prey whole or take huge bites out of large animals. Thresher sharks use their long tails to stun shoaling fishes, and sawsharks either stir prey from the seabed or slash at swimming prey with their tooth-studded rostra. The bonnethead shark is the only known omnivorous species. Its ...
The following description appears to intermix traits from both whales and squids; for one, he says it is black in color, with a square head the length of 10–12 cubits (roughly 6–7 m (20–23 ft), if assumed to be Swedish ells: 0.594 m (1.95 ft)), [39] with a body length of 14–15 cubits (roughly 8–9 m (26–30 ft)), [40] giving a total ...
Size matters to these feuding scientists.
They grew more than 4.5 metres (15 feet) long. [109] Ptychodus: Ptychodus is a genus of extinct shark (previously considered as hybodontiformes but later denied [110]) that lived from the late Cretaceous to the Paleogene. [111] [112] Ptychodus mortoni (pictured) was about 32 feet (9.8 metres) long and was unearthed in Kansas, United States. [113]
A 20.75 m (68.1 ft) long whale shark was reported as being stranded along the Ratnagiri coast in 1995. [ 42 ] [ 43 ] A female individual with a standard length of 15 m (49.2 ft) and an estimated total length at 18.8 m (61.7 ft) was reported from the Arabian Sea in 2001. [ 44 ]
Megalodon is an extinct genus of bivalve molluscs that reportedly lived from the Devonian to the Jurassic period. [1] It is not clear, however, that all the fossils assigned to Megalodon from that span of time really belong in the same genus. Jurassic relatives of Megalodon such as Pachyrisma grande were closely related to the rudists. [2]
The coelacanth was long considered a "living fossil" because scientists thought it was the sole remaining member of a taxon otherwise known only from fossils, with no close relatives alive, [8] and that it evolved into roughly its current form approximately 400 million years ago. [1]