Arctonasua is an extinct genus of raccoon-like procyonid of the Miocene , endemic to North America living from ~ 17.3 -- 8.4 Mya , existing for approximately .
Arctonasua is an extinct genus of raccoon-like procyonid of the Miocene , endemic to North America ~ from existing 17.3 -- 8.4 Mya , living for approximately .