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Paenungulata (from Latin paene "almost" + ungulātus "having hoofs") is a clade of "sub-ungulates", which groups three extant mammal orders: Proboscidea (including elephants), Sirenia (sea cows, including dugongs and manatees), and Hyracoidea ().
Elephantidae is a family of large, herbivorous proboscidean mammals which includes the living elephants (belonging to the genera Elephas and Loxodonta), as well as a number of extinct genera like Mammuthus (mammoths) and Palaeoloxodon.
Primelephas is a genus of Elephantinae [1] that existed during the Miocene and Pliocene epochs. The name of the genus suggests 'first elephant'. These primitive elephantids are thought to be the common ancestor of Mammuthus, the mammoths, and the closely allied genera Elephas and Loxodonta, the Asian and African elephants, diverging some 4-6 million years ago. [2]
The largest extant proboscidean is the African bush elephant, with a world record of size of 4 m (13.1 ft) at the shoulder and 10.4 t (11.5 short tons). [2] In addition to their enormous size, later proboscideans are distinguished by tusks and long, muscular trunks, which were less developed or absent in early proboscideans.
The ancestry from L. cyclotis was more closely related to modern West African populations of the forest elephant than to other forest elephant populations, while the mammoth ancestry was basal to the split between woolly and Columbian mammoths, probably from shortly after the split between the ancestors of mammoths and Asian elephants.
Elephas is a genus of elephants and one of two surviving genera in the family Elephantidae, comprising one extant species, the Asian elephant (E. maximus). [1] Several extinct species have been identified as belonging to the genus, extending back to the Pliocene or possibly the late Miocene .
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