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Paraceratherium is one of the largest known land mammals that have ever existed, but its precise size is unclear because of the lack of complete specimens. [4] Its total body length was estimated as 8.7 m (28.5 ft) from front to back by Granger and Gregory in 1936, and 7.4 m (24.3 ft) by the palaeontologist Vera Gromova in 1959, [ 33 ] but the ...
Rank Common name Scientific name Family Image Average mass (kg) Maximum mass (kg) Average length (m) Maximum length (m) Shoulder height (m) Native range
The largest dinosaurs, and the largest animals to ever live on land, were the plant-eating, long-necked Sauropoda. The tallest and heaviest sauropod known from a complete skeleton is a specimen of an immature Giraffatitan discovered in Tanzania between 1907 and 1912, now mounted in the Museum für Naturkunde of Berlin.
A male specimen of Dinopithecus projected to weigh an average of 46 kg (101 lb) and up to 57 kg (126 lb), exceeds the maximum weight record of the chacma baboon, the largest extant baboon. [225] The largest known New World monkey was Cartelles, which is studied as specimen of Protopithecus, weighing up to 34.27 kg (75.6 lb).
Typically, Old World monkeys (paleotropical) are larger than New World monkeys (neotropical); the reasons for this are not entirely understood but several hypotheses have been generated. [3] As a rule, primate brains are "significantly larger" than those of other mammals with similar body sizes. [ 4 ]
Assuming it was about 20% larger, Larramendi calculated an extrapolated femur length of 1.9 metres (6.2 ft) and a speculative size estimate of 5.2 metres (17.1 ft) tall at the shoulder and 22 tonnes (49,000 lb) in body mass, which if correct would make P. namadicus possibly the largest land mammal ever, exceeding even paraceratheres in size.
The largest extant monotreme (egg-bearing mammal) is the western long-beaked echidna (Zaglossus bruijni) weighing up to 16.5 kg (36 lb) and measuring 1 m (3.3 ft) long. [89] The largest monotreme ever was the extinct echidna species Murrayglossus hacketti , known only from a few bones found in Western Australia .
The heaviest land mammal is the African bush elephant, which has a weight of up to 10.1 t (11.1 short tons). It measures 10–13 ft at the shoulder and consumes around 230 kg (500 lb) of vegetation a day.