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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 ...
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.
The largest odd-toed ungulates are rhinoceroses, and the extinct Paraceratherium, a hornless rhino from the Oligocene, is considered one of the largest land mammals of all time. [4] At the other extreme, an early member of the order, the prehistoric horse Eohippus , had a withers height of only 30 to 60 cm (12 to 24 in). [ 5 ]
The largest known species like Mammuthus meridionalis and Mammuthus trogontherii (the steppe mammoth) were considerably larger than modern elephants, with mature adult males having an average height of approximately 3.8–4.2 m (12.5–13.8 ft) at the shoulder and weights of 9.6–12.7 tonnes (21,000–28,000 lb), while exceptionally large ...
The largest member of this group, Dunkleosteus, was a true "superpredator" of the latest Devonian period, reaching 3 to as much as 8 metres in length. In contrast, the long-nosed Rolfosteus measured just 15 cm. Fossils of Incisoscutum have been found containing unborn fetuses, indicating that arthrodires gave birth to live young.
Gargantuavisis the largest known bird of the Mesozoic, a size ranging between the cassowaryand the ostrich, and a mass of 140 kg (310 lb) like modern ostriches.[491] In 2019 specimens MDE A-08 and IVPP-V12325 were measured at 1.8 m (5 ft 11 in) in length, 1.3 m (4 ft 3 in) in hip height, and 120 kg (260 lb) in weight.
This adult male specimen was called the "Yukagir mammoth" and is estimated to have lived around 18,560 years ago, been 2.829 m (9 ft 3.4 in) tall at the shoulder, and weighed between 4 and 5 tonnes. It is one of the best-preserved mammoths ever found due to the almost complete head, covered in skin, but without the trunk.
Megalodon teeth can measure over 180 millimeters (7.1 in) in slant height (diagonal length) and are the largest of any known shark species, [29]: 33 implying it was the largest of all macropredatory sharks. [35] In 1989, a nearly complete set of megalodon teeth was discovered in Saitama, Japan.