Ursus

Ursus is a genus of bears and the most diverse extant genus in the family Ursidae. Its members include the biggest bears alive today, Ursus Arctos, Ursus Horribilis, and Ursus Maritimus. The genus Ursus currently lives in North America, Asia, and Europe, with Ursus Arctos Crowtheri living in Africa until 1890. During its 5.33 million year history, many extinct forms have evolved. The biggest of these extinct forms are Ursus Ingressus and Ursus Spelaeus, both of which regularly attained weights of over 2,000 LBS.
== Diet ==
The diet of members of the genus Ursus varies significantly. The species Ursus Americanus, Ursus Arctos, Ursus Horribilis, Ursus Inopinatus, and Ursus Thibetanus are mostly herbivores. The species Ursus Maritimus, however, is a hypercarnivore, preying on seals, whales, and any other animals that can be found in its environment. It evolved to be a hypercarnivore probably because plants were scarce in the Arctic.
== Extant Species ==
There are six extant species in the genus Ursus.
Ursus Americanus (American Black Bear)
* Ursus Americanus Altifrontalis (Olympic Black Bear)
* Ursus Americanus Amblyceps (New Mexico Black Bear)
* Ursus Americanus Americanus (Eastern Black Bear)
* Ursus Americanus Amplidens (Giant Black Bear) (extinct)
* Ursus Americanus Carlottae (Queen Charlotte Islands Black Bear)
* Ursus Americanus Cinnamomum (Cinnamon Bear)
* Ursus Americanus Emmonsii (Glacier Bear)
* Ursus Americanus Eremicus (East Mexican Black Bear)
* Ursus Americanus Floridanus (Florida Black Bear)
* Ursus Americanus Hamiltoni (Newfoundland Black Bear)
* Ursus Americanus Kermodei (Spirit Bear)
* Ursus Americanus Luteolus (Louisiana Black Bear)
* Ursus Americanus Machetes (West Mexican Black Bear)
* Ursus Americanus Perniger (Kenai Black Bear)
* Ursus Americanus Pugnax (Dall Island Black Bear)
* Ursus Americanus Vancouveri (Vancouver Black Bear)
Ursus Arctos (Brown Bear)
* Ursus Arctos Arctos (European Brown Bear)
* Ursus Arctos Beringianus (Kamchatka Brown Bear)
* Ursus Arctos Collaris (East Siberian Brown Bear)
* Ursus Arctos Crowtheri (North African Brown Bear) (extinct)
* Ursus Arctos Gobiensis (Gobi Bear)
* Ursus Arctos Isabellinus (Himalayan Brown Bear)
* Ursus Arctos Lasiotus (Ussuri Brown Bear)
* Ursus Arctos Marsicanus (Marsican Brown Bear)
* Ursus Arctos Priscus (Steppe Brown Bear) (extinct)
* Ursus Arctos Pruinosus (Tibetan Blue Bear)
* Ursus Arctos Pyrenaicus (Cantabrian Brown Bear)
* Ursus Arctos Syriacus (Syrian Brown Bear)
Ursus Horribilis
* Ursus Horribilis Alascensis (Alaskan Grizzly Bear)
* Ursus Horribilis Californicus (California Grizzly Bear) (extinct)
* Ursus Horribilis Dalli (Dall Island Brown Bear) (extinct)
* Ursus Horribilis Gyas (Alaskan Peninsula Brown Bear)
* Ursus Horribilis Horriaeus (Pleistocene Grizzly Bear) (extinct)
* Ursus Horribilis Horribilis (Mainland Grizzly Bear)
* Ursus Horribilis Middendorffi (Kodiak Bear)
* Ursus Horribilis Nelsoni (Mexican Grizzly Bear) (extinct)
* Ursus Horribilis Pervagor (Wandering Grizzly Bear) (Extinct)
* Ursus Horribilis Sitkensis (Sitka Brown Bear)
* Ursus Horribilis Stickeensis (Sitikine Brown Bear)
* Ursus Horribilis Ungavaesis (Ungava Brown Bear) (extinct)
Ursus Inopinatus (MacFarlane's Bear)
* No known subspecies
Ursus Maritimus (Polar Bear)
* Ursus Maritimus Horribilis (Grolar Bear) (hybrid)
* Ursus Maritimus Labradorensis (Labrador Polar Bear) (extinct)
* Ursus Maritimus Maritimus (Modern Polar Bear)
* Ursus Maritimus Tyrannus (Tyrant Polar Bear)
Ursus Thibetanus (Asiatic Black Bear)
* Ursus Thibetanus Formosanus (Formosan Black Bear)
* Ursus Thibetanus Gedrosianus (Balochistan Black Bear)
* Ursus Thibetanus Japonicus (Japanese Black Bear)
* Ursus Thibetanus Kokeni (Koken's Black Bear) (extinct)
* Ursus Thibetanus Kurteni (Kurten's Black Bear) (extinct)
* Ursus Thibetanus Laniger (Himalayan Black Bear)
* Ursus Thibetanus Mediterraneus (Mediterranean Black Bear) (extinct)
* Ursus Thibetanus Mupinensis (Indochinese Black Bear)
* Ursus Thibetanus Permjak (European Black Bear) (extinct)
* Ursus Thibetanus Thibetanus (Tibetan Black Bear)
* Ursus Thibetanus Ussuricus (Ussuri Black Bear)
== Fossils ==
These are extinct members of the genus Ursus, such as the previously mentioned Ursus Ingressus and Ursus Spelaeus.
* Ursus Arvernensis (Arverne Bear)
* Ursus Dolinensis (Gran Dolina Bear)
* Ursus Deningeri (Deninger's Bear)
* Ursus Etruscus (Etruscan Bear)
* Ursus Ingressus (Gamssulzen Cave Bear)
* Ursus Kudarensis (Kudaro Cave Bear)
* Ursus Minimus (Auvergene Bear)
* Ursus Planifrons (Flatbrowed bear)
* Ursus Praekudarensis (Ancient Cave Bear)
* Ursus Rossicus (Pleistocene Small Cave Bear)
* Ursus Savini (Small Cave Bear)
* Ursus Spelaeus (Cave Bear)
* Ursus Vitabillis (Cumberland Cave Bear)
Category:Bears