''Haplolambda'' 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 ...

mammals 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 the

Paleocene The Paleocene ( ), or Palaeocene, is a geological epoch (geology), epoch that lasted from about 66 to 56 mya (unit), million years ago (mya). It is the first epoch of the Paleogene Period (geology), Period in the modern Cenozoic Era (geology), ...

of North America, containing two species: ''H. quinni'' known from Colorado and ''H. simpsoni'' from Utah.

References

Pantodonta Fossil taxa described in 1939 Paleocene mammals of North America Prehistoric mammal genera {{paleo-mammal-stub