Temporal range: Chattian- Tortonian 24.8–10.3 Ma
|Drawing of the holotype skull of Leptocyon gregorii|
|Fossil range of Leptocyon species|
Leptocyon (Greek: slender dog) is a small extinct genus of canid endemic to North America during the Oligocene through Miocene living from 24.8—10.3 million years ago, existing for about 25.8-10.3 million years.
Leptocyon was named by Matthew (1918). It was synonymized subjectively with Vulpes by Gregory (1942); it was revalidated by Webb (1969), Carroll (1988), and Munthe (1998). It was assigned to the Canidae by Matthew (1918), Webb (1969), Carroll (1988), and Munthe (1998).
Two specimens were examined by Legendre and Roth. Estimated body mass of these two was 3.26 kg (7.2 lb)
- "Leptocyon". About.com. Retrieved 14 July 2015.
- PaleoBiology Database: Leptocyon, basic info
- Evolution of Tertiary Mammals of North America: Terrestrial animals of North America Volume 1, Terrestrial Carnivores, Ungulates, and Ungulate like Mammals. Christine M. Janis carnivores. Louis L. Jacobs, Kathleen Marie Scott.
- J. T. Gregory. 1942. University of California Publications, Bulletin of the Department of Geological Sciences 26(4)
- S. D. Webb. 1969. University of California Publications in Geological Sciences 78
- S. Legendre and C. Roth. 1988. Correlation of carnassial tooth size and body weight in recent carnivores (Mammalia). Historical Biology 1(1):85-98
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