Plains bison

Plains bison
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Artiodactyla
Family: Bovidae
Subfamily: Bovinae
Genus: Bison
Species:
Subspecies:
B. b. bison
Trinomial name
Bison bison bison
IUCN range of the two American bison subspecies.
  Plains bison (Bison bison subsp. bison)
  Wood bison (Bison bison subsp. athabascae)
Synonyms

Bison bison montanae

The plains bison (Bison bison bison) is one of two subspecies/ecotypes of the American bison, the other being the wood bison (B. b. athabascae). A natural population of plains bison survives in Yellowstone National Park (the Yellowstone Park bison herd consisting of an estimated 4,800 bison). Multiple smaller reintroduced herds of bison in many ranges within the midwestern and western United States (including Alaska, but not Hawaii) as well as southern portions of the Canadian Prairies.