''Leptolambda'' is an extinct genus of

pantodont Pantodonta is an extinct suborder (or, according to some, an order) of eutherian mammals. These herbivorous mammals were one of the first groups of large mammals to evolve (around 66 million years ago) after the end of the Cretaceous. The la ...

s in the family

Barylambdidae Barylambdidae is an extinct family of pantodont mammals from North America North America is a continent in the Northern Hemisphere, Northern and Western Hemisphere, Western hemispheres. North America is bordered to the north by the Ar ...

from North America.

References

Pantodonta Paleocene mammals of North America Prehistoric mammal genera {{paleo-mammal-stub