Bison occidentalis Bison occidentalis Bison occidentalis
Bison occidentalis
Bison occidentalis
Bison occidentalis

Bison occidentalis

Bison occidentalis (Bison occidentalis  Lucas, 1898 )

 

Order: Artiodactyla

Family: Bovidae

Dimensions: length - 3 m, height - 1,8 m, weight - 1000 kg

Temporal range: During the Pleistocene epoch (Siberia, China, Japan and North America)

 

Bison occidentalis is an extinct species of bison that lived in Siberia, China, Japan and North America during the Pleistocene. It probably evolved from Bison antiquus. B. occidentalis was smaller, and smaller-horned, than the steppe bison. Unlike any bison before it, its horns pointed upward, parallel to the plane of its face from nose to forehead, instead of pointing forward through that plane. Around 5,000 years ago, B. occidentalis was replaced by today's smaller Bison bison.

It has been theorized that B. occidentalis declined in numbers because of competition with other grass eaters of the megafauna epoch. More recently ancient DNA studies have proven interbreeding between B. occidentalis and ancestral modern bisons, so it was proposed that B. occidentalis was a localized offshoot of B. antiquus and part of the transition from that chronospecies to modern bisons.

Whether B. occidentalis was a phylogenetically distinct species now entirely extinct or part of the phyletic evolution of a single lineage, the entire evolutionary process encompassing B. antiquus, B. occidentalis and B. bison was witnessed by Native American peoples.

 

 

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Bison occidentalis (Bison occidentalis  Lucas, 1898 )

 

Order: Artiodactyla

Family: Bovidae

Dimensions: length - 3 m, height - 1,8 m, weight - 1000 kg

Temporal range: During the Pleistocene epoch (Siberia, China, Japan and North America)

 

Bison occidentalis is an extinct species of bison that lived in Siberia, China, Japan and North America during the Pleistocene. It probably evolved from Bison antiquus. B. occidentalis was smaller, and smaller-horned, than the steppe bison. Unlike any bison before it, its horns pointed upward, parallel to the plane of its face from nose to forehead, instead of pointing forward through that plane. Around 5,000 years ago, B. occidentalis was replaced by today's smaller Bison bison.

It has been theorized that B. occidentalis declined in numbers because of competition with other grass eaters of the megafauna epoch. More recently ancient DNA studies have proven interbreeding between B. occidentalis and ancestral modern bisons, so it was proposed that B. occidentalis was a localized offshoot of B. antiquus and part of the transition from that chronospecies to modern bisons.

Whether B. occidentalis was a phylogenetically distinct species now entirely extinct or part of the phyletic evolution of a single lineage, the entire evolutionary process encompassing B. antiquus, B. occidentalis and B. bison was witnessed by Native American peoples.

 

 

From Wikipedia, the free encyclopedia

Reviews (4):
Sergio
11.12.2019
¿Puedes dejarlo con fondo blanco?
Митрич
05.11.2018
Бизоны - как ЖИВЫЕ!!!!!!! Особенно неповторим экстерьер каждого вида...
Стас
08.01.2018
Какая силища!
Josee Toupin
03.06.2016
If I want to buy the image of the evolution of the bison.
Is it paper or a download to print myself