Ursavini
Encyclopedia
Ursavini is an extinct tribe
of mammal
s of the family Ursidae (bears) endemic to North America
, Europe
, Africa
, and Asia
during Miocene
through Pliocene
, living from ~23—2.5 Ma, existing for approximately .
Ursavini was assigned to Ursinae
by Hunt (1998) and Jin et al. (2007) and includes the genera Agriotherium
, Indarctos
and Ursavus
.
Tribe (biology)
In biology, a tribe is a taxonomic rank between family and genus. It is sometimes subdivided into subtribes.Some examples include the tribes: Canini, Acalypheae, Hominini, Bombini, and Antidesmeae.-See also:* Biological classification* Rank...
of mammal
Mammal
Mammals are members of a class of air-breathing vertebrate animals characterised by the possession of endothermy, hair, three middle ear bones, and mammary glands functional in mothers with young...
s of the family Ursidae (bears) endemic to North America
North America
North America is a continent wholly within the Northern Hemisphere and almost wholly within the Western Hemisphere. It is also considered a northern subcontinent of the Americas...
, Europe
Europe
Europe is, by convention, one of the world's seven continents. Comprising the westernmost peninsula of Eurasia, Europe is generally 'divided' from Asia to its east by the watershed divides of the Ural and Caucasus Mountains, the Ural River, the Caspian and Black Seas, and the waterways connecting...
, Africa
Africa
Africa is the world's second largest and second most populous continent, after Asia. At about 30.2 million km² including adjacent islands, it covers 6% of the Earth's total surface area and 20.4% of the total land area...
, and Asia
Asia
Asia is the world's largest and most populous continent, located primarily in the eastern and northern hemispheres. It covers 8.7% of the Earth's total surface area and with approximately 3.879 billion people, it hosts 60% of the world's current human population...
during Miocene
Miocene
The Miocene is a geological epoch of the Neogene Period and extends from about . The Miocene was named by Sir Charles Lyell. Its name comes from the Greek words and and means "less recent" because it has 18% fewer modern sea invertebrates than the Pliocene. The Miocene follows the Oligocene...
through Pliocene
Pliocene
The Pliocene Epoch is the period in the geologic timescale that extends from 5.332 million to 2.588 million years before present. It is the second and youngest epoch of the Neogene Period in the Cenozoic Era. The Pliocene follows the Miocene Epoch and is followed by the Pleistocene Epoch...
, living from ~23—2.5 Ma, existing for approximately .
Ursavini was assigned to Ursinae
Ursinae
Ursinae is a subfamily of Ursidae named by Swainson though probably named before Hunt 1998. It was assigned to Ursidae by Bjork , Hunt and Jin et al...
by Hunt (1998) and Jin et al. (2007) and includes the genera Agriotherium
Agriotherium
Agriotherium is an extinct genus of Ursidae of the Miocene through Pleistocene epochs, endemic to North America, Europe, Africa, and Asia living from ~13.6–2.5 Ma, existing for approximately .-Taxonomy:...
, Indarctos
Indarctos
Indarctos is a genus of mammals of the family Ursidae endemic to North America, Europe, Africa, and Asia during the Miocene, living from ~11.1—5.3 Ma, existing for approximately ....
and Ursavus
Ursavus
Ursavus is an extinct genus of mammals of the family Ursidae that existed in North America, Europe, Africa, and Asia during the Miocene, living from ~23—5.3 Ma, existing for approximately . It apparently dispersed from Asia into North America about 20 Ma, becoming the earliest member of the...
.