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Oligocene Fox Skull, Hesperocyon - 3.6 inches

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  • Hesperocyon is an extinct genus of canid; they resembled foxes.
  • Location: Custer County, South Dakota (Brule Formation, White River Badlands Group)
  • Age:  Oligocene (30 - 34 million years old).
  • This partial skull measures 3.6" x 2.25" x 1.5" and weighs 0.25 lbs.