Trigonictis macrodon

Trigonictis macrodon is an extinct species of mammal related to the living grison (genus Galictis). It lived in North America during the Pliocene to Pleistocene epochs, from ~4.1–1.6 Ma. (AEO), existing for approximately 2.5 million years. Fossil specimens have been found across the United States, from Washington and Oregon in the northwest to California and Florida in the south.