Original sentence: Cynarctus is an extinct genus of borophagine dog from the Miocene of North America
Edited sentence: Cynarctus existed for approximately.Cynarctus is an extinct canid of the subfamily Borophaginae which inhabited most of North America during the Late Miocene subepoch (15.9—10.3 mya).Cynarctus was named by Matthew in 1902.Fossils have been uncovered in California, Maryland, western Nebraska, and Texas.It was assigned to Amphicyoninae by Matthew (1902); to Canidae by Carroll (1988); and to Cynarctina by Wang et al.The first specimen was estimated to weigh 5.28 kg (11.28 lbs).The second specimen was estimated to weigh 5.16 kg (11.3 lbs).Two specimens were examined by Legendre and Roth for body mass