Multituberculata
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Multituberculata is an extinct order of rodent-like mammals with a fossil record spanning over 130 million years. They first appeared in the Middle Jurassic, and reached a peak diversity during the La
Catopsbaatar catopsaloides
Restoration of Taeniolabis, the largest multituberculate at approximately 22 kg (49 lb).
Skull of Ptilodus. Notice the massive blade-like lower premolar.
Lower jaws and teeth of allodontid multituberculates
Mammal
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A mammal is a vertebrate animal of the class Mammalia. Mammals are characterized by the presence of milk-producing mammary glands for feeding their young, a broad neocortex region of the brain, fur or
Multituberculata
…Multituberculata (commonly known as multituberculates, named for the multiple tubercles of their teeth) is an extinct order of rodent-like mammals with a fossil record spanning over 130 million years. They first appeared in the Middle Jurassic, and reached a peak diversity during the Late Cretaceous…
Restoration of Juramaia sinensis, the oldest-known eutherian (160 mya)
Fossil of Thrinaxodon at the National Museum of Natural History
Hyaenodon horridus at the Royal Ontario Museum. The genus Hyaenodon was among the most successful mammals of the late Eocene-early Miocene epochs spanning for most of the Paleogene and some of the Neogene periods, undergoing many endemic radiations in North America, Europe, and Asia.
Sexual dimorphism in aurochs, the extinct wild ancestor of cattle