Polar Bear ( Ursus maritimus ) Fact Sheet: Taxonomy & History
2024年8月13日 · Lineages leading to the 6 distinct living bear species in Ursus radiated from a common ancestor 6.3 million years ago (Pliocene). Distant ancestors: Molecular data indicate that the procyonid (raccoons, koatis, ringtails, kinkajous and others) and bear families diverged from each other about 30 million years ago (Oligocene).
ADW: Ursus maritimus: CLASSIFICATION
Species Ursus maritimus polar bear. Ursus maritimus: information (1) Ursus maritimus: pictures (9) Ursus maritimus: specimens (7) ADW Pocket Guides on the iOS App Store! ... Genus Ursus black bears, brown bear, and polar bear. Ursus: pictures (64) Ursus: specimens (28)
Polar bear - Wikipedia
The polar bear (Ursus maritimus) is a large bear native to the Arctic and nearby areas. It is closely related to the brown bear, and the two species can interbreed. The polar bear is the largest extant species of bear and land carnivore, with adult males weighing 300–800 kg (660–1,760 lb
All About Polar Bears - Scientific Classification | United Parks
Species can be distinguished by size, build, coloration, and habitat. Ursus maritimus is Latin for "sea bear". The polar bear is the only bear considered to be a marine mammal.
Polar Bear Fact Sheet | Blog | Nature - PBS
2020年12月9日 · Polar bears are classified as carnivores and are the most carnivorous member of the bear family. They predominantly eat meat but occasionally eat vegetation. As the apex predators of the...
Polar Bear - A-Z Animals
2024年5月27日 · The polar bear is a large species of bear that is found inhabiting the ice fields in the Arctic Ocean. It is the biggest species of bear in the world (with the exception of the Kodiak brown bears found in Alaska, which can reach similar sizes), with males often weighing in at around 1300 pounds.
Polar bear | Description, Habitat, & Facts | Britannica
2024年11月29日 · Polar bear, great white northern bear found throughout the Arctic region. The polar bear is the largest and most powerful carnivore on land, a title it shares with a subspecies of brown bear called the Kodiak bear. It has no natural predators and knows no fear of humans, making it an extremely dangerous animal.
Taxonomy browser (Ursus maritimus) - National Center for …
THE NCBI Taxonomy database allows browsing of the taxonomy tree, which contains a classification of organisms.
Polar Bear (Ursus maritimus) | U.S. Fish & Wildlife Service
2006年2月9日 · The polar bear (Ursus maritimus) is the largest of the extant bear species and is classified as a marine mammal. Polar bears are protected under the Endangered Species Act and Marine Mammal Protection Act.
Bears of the Last Frontier | Polar Bear Fact Sheet - PBS
2012年7月22日 · Class: Mammalia. Order: Carnivora. Family: Ursidae. Genus: Ursus. Species: U. maritimus. Size and Weight: Polar bears exhibit sexual dimorphism; male polar bears can be two to three times...