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Rhinos and tapirs are more closely related to each other than to horses. The separation of horses from other perissodactyls took place according to molecular genetic analysis in the Paleocene some 56 million years ago, while the rhinos and tapirs split off in the lower-middle Eocene, about 47 million years ago.
Perissodactyls range in size from the 1.8 m (6 ft) long Baird's tapir to the 4 m (13 ft) long white rhinoceros. Over 50 million domesticated donkeys and 58 million horses are used in farming worldwide, while four species of perissodactyl have potentially fewer than 200 members remaining.
A rhinoceros (/ r aɪ ˈ n ɒ s ər ə s / ry-NOSS-ə-rəss; from Ancient Greek ῥινόκερως (rhinókerōs) 'nose-horned'; from ῥίς (rhis) 'nose' and κέρας (kéras) 'horn'; [1] pl.: rhinoceros or rhinoceroses), commonly abbreviated to rhino, is a member of any of the five extant species (or numerous extinct species) of odd-toed ungulates (perissodactyls) in the family ...
A world first in rhinoceros reproductive health could save northern white rhinos from extinction, scientists said Wednesday. The team at the BioRescue project successfully impregnated a southern ...
Asian and American tapirs were believed to have diverged around 20 to 30 million years ago; and tapirs migrated from North America to South America around 3 million years ago, as part of the Great American Interchange. [39] Perissodactyls were the dominant group of large terrestrial browsers right through the Oligocene.
The samples were collected from two rhinos that were less than 2 years old, two that were between 3 and 7 years old, two adult rhinos that had given birth at the zoo, and two that had been unable to.
The movie "Gladiator II" features scenes involving rhinos, baboons and sharks. A professor explains whether these animals were actually featured in the Roman Colosseum.
This list of fictional pachyderms is a subsidiary to the List of fictional ungulates.Characters from various fictional works are organized by medium. Outside strict biological classification, [a] the term "pachyderm" is commonly used to describe elephants, rhinoceroses, tapirs, and hippopotamuses; this list also includes extinct mammals such as woolly mammoths, mastodons, etc.