Theria

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  Cetacea

  The order Cetacea (pronounced /sɨˈteɪʃ(i)ə/, L. cetus, whale, from Greek) includes whales, dolphins, and porpoises. Cetus is Latin and is used in biological names to mean "whale"; its original meaning, "large sea animal", was more general. It comes from Ancient Greek κῆτος (kētos), meaning "whale"...
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  Euarchontoglires

  The Euarchontoglires (synonymous with Supraprimates) is a clade of mammals, the living members of which include rodents and primates (including humans). The Euarchontoclires clade is based on DNA sequence analyses and Retrotransposon presence/absence data, combining the Glires clade, which consists...
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  Bat

  Bats are flying mammals in the order Chiroptera (pronounced /kaɪˈrɒptərə/). The forelimbs of bats are webbed and developed as wings, making them the only mammals naturally capable of true and sustained flight. By contrast, other mammals said to fly, such as flying squirrels, gliding possums and...
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  Carnivora

  The diverse order Carnivora (pronounced /kɑrˈnɪvərə/ or sometimes /ˌkɑrnɪˈvɔərə/; from Latin carō (stem carn-) "flesh", + vorāre "to devour") includes over 260 species of placental mammals. Its members are formally referred to as carnivorans, while the word "carnivore" (often popularly applied to...
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  Xenarthra

  The superorder Xenarthra is a group of placental mammals (infraclass Eutheria), extant today only in the Americas. The origins of the order can be traced back as far as the early Tertiary (about 60 million years ago, shortly after the Mesozoic era). The presence of these animals in Central and...
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  Tetrapod

  Tetrapods (Greek τετραποδη tetrapoda, Latin quadruped, "four-footed") are vertebrate animals having four feet, legs or leglike appendages. Amphibians, reptiles, dinosaurs/birds, and mammals are all tetrapods, and even the limbless snakes are tetrapods by descent. The earliest tetrapods radiated...