Search results
Results From The WOW.Com Content Network
It is a species-poor artiodactyl suborder of North American origin [27] that is well adapted to extreme habitats—the dromedary and Bactrian camels in the Old World deserts and the guanacos, llamas, vicuñas, and alpacas in South American high mountain regions. The pig-like creatures are made up of two families:
The order Artiodactyla consists of 349 extant species belonging to 132 genera. This does not include hybrid species or extinct prehistoric species. Modern molecular studies indicate that the 132 genera can be grouped into 23 families; these families are grouped into named suborders and many are further grouped into named clades, and some of these families are subdivided into named subfamilies.
Perissodactyls were the dominant group of large terrestrial browsers right through the Oligocene. However, the rise of grasses in the Miocene (about 20 Mya) saw a major change: the artiodactyl species with their more complex stomachs were better able to adapt to a coarse, low-nutrition diet, and soon rose to prominence.
This category contains articles about taxa at family level in the Artiodactyla order – the even-toed ungulates. Species specific articles should be placed in the appropriate sub-categories Species specific articles should be placed in the appropriate sub-categories
About 25 species are rated by the IUCN as endangered, [16] such as the dama gazelle and mountain nyala. A number of subspecies are also endangered, including the giant sable antelope and the mhorr gazelle. The main causes for concern for these species are habitat loss, competition with cattle for grazing, and trophy hunting.
Six bovid species (clockwise from top left): addax, cattle, mountain gazelle, impala, blue wildebeest, and mouflon Bovidae is a family of hoofed ruminant mammals in the order Artiodactyla . A member of this family is called a bovid.
Hippopotamidae is a family of stout, naked-skinned, and semiaquatic artiodactyl mammals, possessing three-chambered stomachs and walking on four toes on each foot. While they resemble pigs physiologically, their closest living relatives are the cetaceans.
Five cervid species (clockwise from top left): the red deer (Cervus elaphus), sika deer (Cervus nippon), barasingha (Rucervus duvaucelii), reindeer (Rangifer tarandus), white-tailed deer (Odocoileus virginianus) Cervidae is a family of hoofed ruminant mammals in the order Artiodactyla. A member of this family is called a deer or a cervid.