Cetaceans are fully aquatic marine mammals belonging to the order Artiodactyla, and branched off from other artiodactyls around 50 mya ( million years ago ).
22.
Although Simpson placed whales ( Cetacea ) in a separate cohort, recent evidence linking them to Artiodactyla would mean that they belong here as well.
23.
The "'Pecora "'are an infraorder of even-toed hoofed mammals with ruminant digestion ( Ruminantia, a clade within the Artiodactyla ).
24.
The aquatic Cetaceans ( whales, dolphins, and porpoises ) evolved from even-toed ungulate ancestors, and therefore modern taxonomic classification combines Artiodactyla and Cetacea into Cetartiodactyla.
25.
"Heaton, Timothy H . 1989 . Cladogenesis in a Lineage of Leptomeryx ( Artiodactyla, Mammalia ) from the Chadronian of Flagstaff Rim, Natrona County, Wyoming.
26.
Artiodactyla refers to the mammal order of even-toed ungulates the group containing cattle, deer, camels, giraffes, antelope, goats, sheep, pigs and hippopotamuses.
27.
Earlier theories of mammalian evolution would, for example, have aligned bats with the insectivores ( order Eulipotyphla ) and horses with the even-toed ungulates ( order Artiodactyla ).
28.
Broadly the six Mammalian orders which are present here are Primates, Carnivora, Artiodactyla, Rodentia, Lagomorpha and Chiroptera, including endangered and rare species such as Himalayan brown bear and Musk Deer.
29.
Molecular genetic findings suggest the formation of a sister taxon of the Perissodactyla, Cetartiodactyla, which includes the cloven ( Artiodactyla ) and whales ( Cetacea ); together, the two groups form the Euungulata.
30.
"' Ferungulata "'is a traditional clade within the extant Carnivora, Perissodactyla and Artiodactyla as well as Tubulidentata and a superorder, Paenungulata, plus a number of orders known only as fossils.
