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Henri de Blainville recognized the similar anatomy of the limbs of pigs and hippos, [when?] and British zoologist Richard Owen coined the term "even-toed ungulates" and the scientific name "Artiodactyla" in 1848. [18] Internal morphology (mainly the stomach and the molars) were used for classification.
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.
The name Whippomorpha is a combination of English (wh[ale] + hippo[potamus]) and Greek (μορφή, morphē = form). [2]Some attempts have been made to rename the suborder Cetancodonta, due to the misleading utilization of the suffix -morpha for a crown group, [6] as well as the risk of confusion with the clade Hippomorpha (which consists of equid perissodactyls); [7] however Whippomorpha ...
The anatomy of the cheek teeth resembles those of Mesozoic marine reptiles which fed on armoured fish, large fish, reptiles, and ammonites, and the teeth may have been used to grip onto prey firmly. Therefore, Thewissen suggested Ambulocetus was most likely an ambush predator, the jaw adapted to handle struggling prey.
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
The glands are located in large preorbital pits in the lacrimal bone, and are surrounded by specialized facial muscles that compress them to express the secretions more effectively. In contrast, the saiga antelope ( Saiga tatarica ) is a polygamous and somewhat nomadic species which does not occupy any permanent territory at any time during the ...