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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.
Brontotheriidae is a family of extinct mammals belonging to the order Perissodactyla, the order that includes horses, rhinoceroses, and tapirs.Superficially, they looked rather like rhinos with some developing bony nose horns, and were some of the earliest mammals to have evolved large body sizes of several tonnes.
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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. World first IVF rhino pregnancy could save northern white rhinos from ...
The movie "Gladiator II" features scenes involving rhinos, baboons and sharks. A professor explains whether these animals were actually featured in the Roman Colosseum.
The Baird's Tapir Project of Costa Rica, begun in 1994, is the longest ongoing tapir project in the world. It involves placing radio collars on tapirs in Costa Rica's Corcovado National Park to study their social systems and habitat preferences.