Leptomeryx

Leptomeryx is an extinct genus of ruminant of the family Leptomerycidae, endemic to North America during the Eocene through Oligocene 38–24.8 Mya, existing for approximately 13.2 million years. It was a small deer-like ruminant with somewhat slender body.

Mounted skeleton

L. evansi

Leptomeryx Temporal range: middle Eocene to Late Oligocene[1]
Skeleton, Paleontology Museum of Zurich
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Artiodactyla
Family:	†Leptomerycidae
Subfamily:	†Leptomerycinae
Genus:	†Leptomeryx Leidy, 1853
Type species
†Leptomeryx evansi
Species[2]
†L. blacki †L. evansi †L. mammifer †L. obliquidens †L. speciosus †L. yoderi

Fossil distribution

Sites and species recovered:

• Titus Canyon, Inyo County, California (L.blacki) ~30.6—33.9 Ma.
• Anxiety Butte, Saskatchewan, Canada (L. sp., L. evansi) ~38—24.8 Ma.
• Calf Creek, Saskatchewan, Canada, (L. mammifer) ~38—33.3 Ma.
• Toadstool Park, Sioux County, Nebraska (L. speciosus) ~37.2—33.3 Ma.^[3]
• Medicine Pole Hills, Bowman County, North Dakota (L. yoderi) ~38—33.9 Ma.^[4]