Dictionary of Human Evolution and Biology

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Most abundant family of archaic fossil mammals belonging to the order Plesiadapiformes. Plesiadapids are known from the Paleocene and early Eocene of North America and Europe; six genera with large range in body size, 100 g to 3 kg. Lower incisors are procumbent and the dental formula is variable between genera and through time; molars and premolars are primate-like with low bulbous cusps, suggesting diets comprised of plant material.

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