Ursus
{{Taxobox
| name = Ursus
| image = TE-Collage Ursus-v2.png
| image_width = 220px
| image_caption = A parte superiori: Ursus arctos, Ursus americanus, Ursus maritimus, Ursus thibetanus.
| regnum = Animalia
| phylum = Chordata
| classis = Mammalia
| ordo = Carnivora
| familia = Ursidae
| genus = Ursus
| genus_authority = Linnaeus, 1758
| subdivision_ranks = Species
| subdivision = 
Ursus arctos
Ursus americanus
Ursus maritimus
Ursus thibetanusUrsus spelaeus (exstinctus)}}Ursus est genus mammalium familiae Ursidarum quod Ursum americanum, Ursum arctos, et Ursum maritimum, omnes late distributos, comprehendit. Ursus, vocabulum Latinum classicum, ex quo nomen generis deducitur, speciem Ursum arcton (solum antiquis cognitum) significat.

Species et subspecies Ursorum
 Ursus americanus Ursus americanus cinnamomum Ursus americanus kermodei Ursus americanus floridanus Ursus arctos Ursus arctos arctos Ursus arctos collaris Ursus arctos beringianus Ursus arctos crowtheri (exstinctus)
 Ursus arctos gobiensis Ursus arctos horribilis Ursus arctos isabellinus Ursus arctos middendorffi Ursus arctos nelsoni (exstinctus?)
 'Ursus arctos pruinosus Ursus arctos syriacus Ursus arctos lasiotus Ursus deningeri (exstinctus)
 Ursus etruscus (exstinctus)
 Ursus maritimus (olim Thalarctos maritimus)
 Ursus maritimus maritimus (classificatio in dubium vocata)
 Ursus maritimus marinus (classificatio in dubium vocata)
 Ursus maritimus tyrannus (exstinctus)
 Ursus minimus (exstinctus)
 Ursus spelaeus (exstinctus)
 Ursus thibetanus vel Selenarctos thibetanus Ursus thibetanus formosanus Ursus thibetanus gedrosianus Ursus thibetanus japonica Ursus thibetanus laniger Ursus thibetanus mupinensis Ursus thibetanus thibetanus Ursus thibetanus ussuricus 
Hybrida inter Ursos arctos horribiles et Ursos maritimos observata est, Anglice pizzly, prizzly, et grolar bear vulgo appellata.
 
Bibliographia 
Latorre, Ángel Cabrera. 1914. "Ursus." In Fauna ibérica: mamíferos, apud www.archive.org.
Nowak, Ronald M. 1999. Walker’s Mammals of the World. Ed 6a. Baltimorae: Johns Hopkins University Press. ISBN 0-8018-5789-9.
Wilson, D. E., et D. M. Reeder. 2005. Mammal Species of the World.'' Baltimorae: Johns Hopkins University Press. ISBN 0-8018-8221-4.

Nexus externi

Taxa Linnaei
Taxa 1758
Ursidae