Explore the Family Tree
Species - Latest posts / Genres - Latest posts / Animals - Latest posts / Mammals Explore the Family Tree Uncovering ungulate taxonomy All ungulates are mammals (Class Mammalia) - a group of warm-blooded (endothermic) animals with backbones. Taxonomically, mammals are animals (Kingdom Animalia) and belong to the Phylum Chordata, Subphylum Vertebrata. Mammals can be distinguished from other animals by the presence of milk-producing skin glands - these mammary glands, for which the Class Mammalia is named, are found in every mammal and nowhere else in the Animal Kingdom. Many other characters are used to diagnose mammals, including the presence of hair, three middle ear bones, and a four-chambered heart. Within the mammals, there are two extant subclasses: the Prototheria, containing only three modern species of egg-laying monotremes (Order Monotremata); and the Theria, or viviparous mammals (those which give birth to...