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The largest reported individual size was a male killed in 1890 by Edward McIlhenny [28] on Marsh Island, Louisiana, and reportedly measured at 5.84 m (19 ft 2 in) in length, but no voucher specimen was available, since the American alligator was left on a muddy bank after having been measured due to having been too massive to relocate. [26]
Cuvier's dwarf caiman (Paleosuchus palpebrosus) is a small crocodilian in the alligator family from northern and central South America.It is found in Bolivia, Brazil, Colombia, Ecuador, French Guiana, Guyana, Paraguay, Peru, Suriname, Trinidad and Venezuela.
An average adult American alligator's weight and length is 360 kg (790 lb) and 4 m (13 ft), but they sometimes grow to 4.4 m (14 ft) long and weigh over 450 kg (990 lb). [11] The largest ever recorded, found in Louisiana, measured 5.84 m (19.2 ft). [12] The Chinese alligator is smaller, rarely exceeding 2.1 m (7 ft) in length.
Despite the large size alligator gar can attain, they are kept as aquarium fish, though many fish labeled as "alligator gar" in the aquarium trade are actually smaller species. Alligator gar require a very large aquarium or pond, and ample resources for them to thrive in captivity. They are also a popular fish for public aquaria and zoos.
Caimaninae is cladistically defined as Caiman crocodylus (the spectacled caiman) and all species closer to it than to Alligator mississippiensis (the American alligator). [ 8 ] [ 9 ] This is a stem-based definition for caimaninae, and means that it includes more basal extinct caimanine ancestors that are more closely related to living caimans ...
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A maximum size of 22 m (72 ft) and 25–30 tons had been deemed to be most realistic. [73] However, a 2013 study which estimated the maximum size of the animal based on the largest specimens it is estimated that Leedsichthys would have a maximum length of 16.5 metres (54 ft) and a maximum weight of 49 tonnes (108,000 lb). [74]
This caiman is a dark greyish-brown with mid-brown eyes. Males grow to about 1.7 to 2.3 m (5 ft 7 in to 7 ft 7 in) long, with the largest recorded specimen being 2.6 m (8 ft 6 in). Females do not often exceed 1.4 m (4 ft 7 in). It is a robust crocodilian, strong for its size, and tends to carry its head high with its neck angled upwards.