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An additional occurrence of Simocyon Mammalia, Carnivora, Procyonidae in North America



An additional occurrence of Simocyon Mammalia, Carnivora, Procyonidae in North America



Miscellaneous Publication - Utah Geological Survey 99-1: 487-493



A nearly complete lower jaw of the large procyonid Simocyon was collected from southeastern Idaho, 100 kilometers north of the Utah state line. Simocyon indicates that the age of the upper member of the Starlight Formation is late early Hemphillian (North American Land Mammal Age), approximately 7 Ma. This is the second recorded occurrence of this Eurasian immigrant in North America. The North American specimens of Simocyon are probably conspecific with the Old World S. primigenius. An astragalus from the Starlight Formation that is tentatively referred to Simocyon supports a possible sister group relationship for the Ailurinae and Simocyoninae and the inclusion of both these subfamilies in the Procyonidae.

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Accession: 030002215

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