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The exact size of Paraceratherium is unknown because of the incompleteness of the fossils. The shoulder height was about 4.8 metres (15.7 feet), and the length about 7.4 metres (24.3 feet). Its weight is estimated to have been about 15 to 20 tonnes (33,000 to 44,000 lb). The long neck supported a skull that was about 1.3 metres (4.3 ft) long.
Paraceratheriidae is an extinct family of long-limbed, hornless rhinocerotoids, native to Asia and Eastern Europe [3] that originated in the Eocene epoch and lived until the end of the Oligocene. They represent some of the largest terrestrial mammals to have ever lived.
The legs were long and pillar-like. The long neck supported a skull that was about 1.3 metres (4.3 ft) long. It had large, tusk-like incisors and a nasal incision that suggests it had a prehensile upper lip or trunk. The lifestyle of Paraceratherium may have been similar to that of large mammals such as elephants and modern
I used figure 1 of the article "An Oligocene giant rhino provides insights into Paraceratherium evolution" to try to measure the skull of Paraceratherium linxiaense in length (lateral view of skull) and height (lateral view of left ramus), and the skull is indeed very long based on the independent scale bars, measuring over 100 cm in length and ...
Therefore, there is some uncertainty as to the estimated body size and proportions. AMNH 26168/75 is very fragmentary specimen represented by two large neck vertebrae and a partial metacarpal. However, the remains represent one of the largest land mammals known with an estimated shoulder height of 4.8 metres (15.7 feet). [1]
Skull and neck of a mounted specimen of Juxia sharamurenense, Paleozoological Museum of China As an early indricothere, Juxia was a relatively small compared to its later relatives, with a body mass estimated at 749–888 kilograms (1,651–1,958 lb) or 1,482 kilograms (3,267 lb), [ 5 ] held by elongated long legs and small skull firmly ...
The smallest theropod overall (including avians) is the currently extant bee hummingbird at 6.12 cm long and 2.6g for females, and 5.51 cm long and 3.25g for the males. [ 42 ] In the theropod lineage leading to birds , body size shrank continuously over a period of 50 million years, from an average of 163 kilograms (359 lb) down to 0.8 kg (1.8 lb).
Rhinocerotoidea is a superfamily of perissodactyls that appeared 56 million years ago in the Paleocene.They included four extinct families, the Amynodontidae, the Hyracodontidae, the Paraceratheriidae, and the Eggysodontidae.