Davis, D. Dwight Formerly, Curator of Vertebrate Anatomy, Chicago Museum of Natural History, Chicago, Illinois.
Szalay, Frederick S. Department of Vertebrate Paleontology, American Museum of Natural History, New York, New York.
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One of the four subclasses of Mammalia, containing a single order, the Multituberculata. The Allotheria first appeared in the Late Jurassic and survived well into the Cenozoic, a period of at least 100,000,000 years. Fossils are known from North America, Europe, and Asia.
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