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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.
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.
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 ...
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 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.
Horses and tapirs both evolved in North America; [31] rhinoceroses appear to have developed in Asia from tapir-like animals and then colonised the Americas during the middle Eocene (about 45 Mya). Of the approximately 15 families, only three survive (McKenna and Bell, 1997; Hooker, 2005).
River dolphins of the three species that live exclusively in freshwater, live in different rivers: Ganges and Brahmaputra Rivers of India, the Yangtze River of China, and the Amazon River. Mitochondrial and nuclear DNA sequence analysis demonstrates the three are not related. [41] Mangabeys comprise three different genera of Old World monkeys.