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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.
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.
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.
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.
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 ...
] Outside strict biological classification, the related term pachyderm is commonly used to describe elephants, rhinoceroses, hippopotamuses and tapirs. Cuvier himself defined Pachydermata as "animals with hoofs, non ruminants ", whereas Storr had described it as "mammals with hoofs with more than two toes".
NBC’s TODAY is a news program that informs, entertains, inspires and sets the agenda each morning for Americans, starting at 7 a.m. Want to know more about hosts Savannah Guthrie, Craig Melvin ...
Palorchestes, a genus of the extinct marsupial family Palorchestidae, which are closely related to wombats and koalas in the suborder Vombatiformes, was nicknamed the "marsupial tapir" due to the shape of the animal's nasal bones, which was presumed that they possessed a short proboscis, [63] like those of placental tapirs today.