(class Mammalia, infraclass Eutheria)
A cohort which is proposed on palaeontological grounds but regarded by some authorities as artificial, that includes the Carnivora (all of the modern mammalian carnivores), the primitive ungulates (including the elephants and sea cows), the Perissodactyla (tapirs, rhinoceroses, horses, etc.), and the Artiodactyla (pigs, camels, cattle, etc.), which are believed to have arisen from a common population in the Palaeocene.
Subjects: Zoology and Animal Sciences — Earth Sciences and Geography.