Dictionary of Human Evolution and Biology

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Notharctinae

Subfamily of prosimians belonging to the adapoid family Notharctidae; known from the early through middle Eocene; predominantly a North American taxon with a few early representatives in Europe; six genera of medium-sized forms ranging from 1 to 7 kg. Dental formula: 2.1.4.3/2.1.4.3; dietary adaptations suggest frugivory that shifts to folivory over time. Fused mandibular symphysis over time (i.e. not present in the two earliest genera). Known postcrania indicate leaping abilities. Small size of orbits suggests diurnality. Notharctines comprised a sizable portion of the western North American fauna.

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