After McKenna & Bell, 1997, Trajano & Farrarezzi, 1994, Ginsburg & Morales, 1998, and Tedford & Martin, 2001

<==o Ursidae Fisher de Waldheim, 1817 non? Gray, 1825 (bears; karhut)
   |--o †Ballusia Ginsburg & Morales, 1998
   |  |-- †B. elmensis (Stehlin, 1917) [Ursavus elmensis Stehlin, 1917]
   |  `-- †B. hareni (Ginsburg, 1989) [Ursavus hareni Ginsburg, 1989]
   `--+--o Tremarctinae Merriam & Stock, 1925 (silmälasikarhut)
      |  |?-o †Plionarctos Frick, 1926
      |  |  |?- †P. sp.
      |  |  |-- †P. edensis Frick, 1926
      |  |  `-- †P. harroldorum Tedford & Martin, 2001 [Ursus sp. cf. U. abstrusus]
      |  `--+--o Tremarctos Gervais, 1855
      |     |  |?- †T. floridanus
      |     |  `-- T. ornatus (Spectacled bear; silmälasikarhu)
      |     `--+--o †Arctodus [Arctoidotherium; Arctotherium Bravard, 1857; Dinarctotherium; Pararctotherium; Proarctotherium; Pseudarctotherium; Tremarctotherium]
      |        |  |-- †A. pristinus
      |        |  |-- †A. simus (Cope) [Arctotherium simum] (short-faced bear; lyhytkuonokarhu)
      |        |  `-- †A. angustidens (Kraglievich, 1926)
      |        `--o †Arctotherium Bravard, 1857
      |           |--o †(Arctotherium)
      |           |  |-- †A. (A.) bonariense
      |           |  `-- †A. (A.) latidens
      |           `--o †Pararctotherium Ameghino, 1904 [=? Arctodus; Arctotherium]
      |              |?- †A. (P.) enectum (Paula Couto, 1960)
      |              |-- †A. (P.) brasiliensis (Lund, 1838)
      |              `-- †A. (P.) pamparum Ameghino, 1904
      `--+--o Ailuropodinae (isopandat)
         |  |?- †Kretzoiarctos beatrix (Abella, Montoya & Morales, 2011) Abella, Alba, Robles, Valenciano, Rotgers, Carmona, Montoya & Morales, 2012 [Agriarctos  beatrix]
         |  |--o †Agriarctos Kretzoi, 1942
         |  |  |-- †A. gaali Kretzoi, 1942
         |  |  |-- †A. vighi Kretzoi, 1942
         |  |  `-- †A. depereti
         |  `--+--o †Agriotherium [Hyaenarctos, Lydeccerion]
         |     |  |-- †A. insigne
         |     |  `-- †A. africanum
         |     `--+--o †Indarctos Pilgrim, 1913
         |        |  |-- †I. salmontanus Pilgrim, 1913
         |        |  |-- †I. nevadensis Macdonald, 1959
         |        |  |-- †I. oregonensis Merriam, 1925
         |        |  |-- †I. zdanskyi Qiu & Tedford, 2003
         |        |  |-- †I. punjabiensis
         |        |  |?- †I. laurillardi
         |        |  |-- †I. vireti Villalta & Crusafont, 1943 [Agriotherium insignis var. pontiensis Villalta & Crusafont, 1945; Indarctos arctoides vireti Thenius, 1959]
         |        |  `--+-- †I. arctoides (Depéret, 1895)
         |        |     |-- †I. atticus Weithofer, 1888 [incl. Indarctos bakalovi Kovachev, 1988; Indarctos lagrelii Zdansky, 1924; Indarctos sinensis Zdansky, 1924]
         |        |     `-- †I. anthracitis Weithofer, 1888
         |        `--+--o †Ailurarctos
         |           |  |-- †A. yuanmouensis
         |           |  `-- †A. lufengensis Qiu & Qi, 1989
         |           `--o Ailuropoda Milne-Edwards, 1870 [Aelureidopus, Ailuropus] (pandas, pandat)
         |              |-- †A. microta (dwarf panda; kääpiöpanda)
         |              |-- †A. wulingshanensis
         |              `-- A. melanoleuca  Milne-Edwards, 1870 (panda; isopanda)
         `--o Ursinae Fisher de Waldheim, 1817 non? Gray, 1825 (true bears; varsinaiset karhut)
            |--o †Ursavus Schlosser, 1899
            |  |-- †U. elmensis Stehlin
            |  `--+-- †U. brevirhinus (Hofmann)
            |     `--+-- †U. primaevus (Gaillard, 1899)
            |        |-- †U. depereti Schlosser, 1902
            |        |-- †U. ehrenbergi (Brunner, 1942) [Ursus ehrenbergiBrunner, 1942]
            |        |-- †U. sylvestris Qui & Qi, 1990
            |        `-- †U. isorei Ginsburg & Morales, 1998
            `--o Ursus [Euarctos; Helarctos; Melursus; Selenarctos; Thalassarctos] (karhut)
               |?- †U. minimus Gervais, 1859 [U. boeckhi Schlosser, 1899] (Auvergne bear)
               |?- †U. wenzensis Stach, 1953
               |?- †U. yinanensis Li, 1993
               |?- †U. abstrusus Bjork, 1970
               |-- U. ursinus Shaw, 1791 [Melursus ursinus (Shaw, 1791) Meyer, 1793] (sloth bear; huulikarhu)
               |--+-- U. malayanus Raffles, 1821 [Helarctos malayanus (Raffles, 1821) Horsfield, 1825] (Malayan sun bear; malajikarhu)
               |  `--+--o U. thibetanus (Cuvier, 1823) [Selenarctos thibetanus; Ursus torquatus (Blandford, 1888)] (Asiatic black bear; sepelkarhu)
               |     |  |-- †U. t. mediterraneus (euroopansepelkarhu)
               |     |  |-- †U. t. permjak (uralinsepelkarhu)
               |     |  |-- U. t. thibetanus Cuvier, 1823 (Tibetan black bear; tiibetinsepelkarhu)
               |     |  |-- U. t. laniger Pocock, 1932 (Himalayan black bear; himalajansepelkarhu)
               |     |  |-- U. t. mupinensis Heude, 1901 (Indochinese black bear; indokiinansepelkarhu)
               |     |  |-- U. t. ussuricus Heude, 1901 (Ussuri black bear; amurinsepelkarhu)
               |     |  |-- †U. t. gedrosianus Blanford, 1877 (belutsistaninkarhu) [extiction status need to be validated]
               |     |  |-- U. t. japonicus Schlegel, 1857 (japaninsepelkarhu)
               |     |  `-- U. t. formosanus Swinhoe, 1864 (Formosan black bear; formosansepelkarhu)
               |     `--o U. americanus Pallas, 1780 [Ursus americanus Pallas, 1780; Ursus luteolus Griffith, 1821; Ursus amblyceps Baird, 1859; Ursus floridanus Merriam, 1896; Ursus californiensis Miller, 1900; Ursus carlottae Osgood, 1901; Ursus altifrontalis Elliot, 1903; Ursus machetes Elliot, 1903; Ursus kermodei Hornaday, 1905] (black bear; mustakarhu) [16 subsp. (Larivière, 2001)]
               |        |-- U. a. altifrontalis Elliot, 1903 (<>Britt. Kolumbia)
               |        |-- U. a. amblyceps Baird, 1859
               |        |-- U. a. americanus Pallas, 1780 [U. a. sunborgeri Bangs; U. a. schwenki Shoemaker] (eastern black bear; idänmustakarhu)
               |        |-- U. a. californiensis Miller, 1900
               |        |-- U. a. carlottae Osgood, 1901.
               |        |-- U. a. cinnamomum Audubon & Bachman, 1854 (kanelikarhu)
               |        |-- U. a. emmonsii Dall, 1895 (jäätikkökarhu)
               |        |-- U. a. eremicus Merriam, 1904
               |        |-- U. a. floridanus Merriam, 1896 (floridanmustakarhu)
               |        |-- U. a. hamiltoni Cameron, 1957 (Newfoundland black bear; newfoundlandinmustakarhu)
               |        |-- U. a. kermodei Hornaday, 1905 (kermodeskarhu)
               |        |-- U. a. luteolus Griffith, 1821 (louisiananmustakarhu)
               |        |-- U. a. machetes Elliot, 1903
               |        |-- U. a. perniger Allen, 1910 [U. a. kenaiensis Allen]
               |        |-- U. a. pugnax Swarth, 1911
               |        `-- U. a. vancouveri Hall, 1928
               `--+-- †U. etruscus Cuvier
                  `--+--o †U. spelaeus -group [Spelearctos E. Geoffroy, 1833] (cave bears; luolakarhut)
                     |  |-- †U. savini Andrews, 1922 (Savin's bear)
                     |  `--+--o †U. deningeri von Reichenau, 1904 (Mid-Pleistocene cave bear)
                     |     |  |-- †U. d. praekudarensis Baryshnikov, 1998
                     |     |  |-- †U. d. kudarensis Baryshnikov, 1998 [U. kudarensis] (Asian cave bear)
                     |     |  `-- †U. d. deningeri von Reichenau, 1904
                     |     `--+--+-- †U. ingressus Rabeder & Hofreiter, 2004 (Gamssulzen Cave Bear)
                     |        |  `?-o †U. rossicus Borissiak, 1930 [U. spelaeus rossicus Borissiak, 1930]
                     |        |     |-- †U. r. rossicus
                     |        |     `-- †U. r. uralensis [U. uralensis]
                     |        `--o †U. spelaeus Rosenmüller, 1794 (cave bear; luolakarhu)
                     |           |?- †U. s. kanivetz Vereshchagin, 1973 (Ural Mountain's cave bear)
                     |           |?- †U. s. odessanus von Nordmann, 1858
                     |           |-- †U. s. ladinicus Hofreiter, 2005
                     |           `--+-- †U. s. eremus Rabeder & Hofreiter, 2004
                     |              `-- †U. s. spelaeus Rosenmüller, 1794
                     `--o U. arctos -group
                        |-- U. maritimus Phipps, 1774 (polar bear; jääkarhu)
                        `==o U. arctos Linnaeus, 1758 (brown bear; karhu) [paraphyletic without Ursus maritimus]
                           |--+== U. a. arctos Linnaeus, 1758 (Eurasian brown bear; karhu) [Euraasia]
                           |  |-- †U. a. crowtheri (Atlas bear; atlaksenkarhu)
                           |  |-- U. a. pruinosus Blyth, 1854 [<Tibet>]
                           |  |-- U. a. lasiotus Gray, 1867 [<North China>]
                           |  |-- U. a. syriacus Hemprich & Ehrenberg, 1828
                           |  |-- U. a. isabellinus Horsfield, 1826 [<Nepal>]
                           |  `-- U. a. collaris Cuvier and Geoffroy, 1824 [<Siberia>]
                           `--+-- U. a. alascensis Merriam, 1896 [<Alaska>]
                              |?- U. maritimus Phipps, 1774 (polar bear; jääkarhu)
                              |-- U. a. beringianus Middendorff, 1853 [<Great Shantar Island, Sea of Okhotsk>]
                              |-- U. a. gyas Merriam, 1902 [<Alaska Peninsula>]
                              |-- U. a. dalli Merriam, 1896 [<NW Alaska>]
                              |-- U. a. sitkensis Merriam, 1896 [<Alaska Panhandle>]
                              |-- U. a. stikeenensis Merriam, 1914 [<northern British Columbia>]
                              |-- U. a. middendorffi Merriam, 1896 (kodiak bear; kodiakinkarhu)
                              |-- U. a. horribilis Ord, 1815 (grizzley; harmaakarhu)
                              |-- †U. a. californicus Merriam, 1896 (Californian grizzley; kalifornianruskeakarhu)
                              `-- †U. a. nelsoni Merriam, 1914 (mexican brown bear; meksikonkarhu)

Alternative phylogenies of Ursidae:

After Abella, Alba, Robles, Valenciano, Rotgers, Carmona, Montoya & Morales, 2012

<==o Ursidae
   |--o Ailuropodinae
   |  |?- †Agriotherium [not treated]
   |  |--o †Indarctini
   |  |  `--Indarctos
   |  `--o Ailuropodini
   |     |-- Ailuropoda
   |     `--+-- †Ailurarctos
   |        `--+-- †Agriarctos
   |           `-- †Kretzoiarctos
   `--+-- Tremarctinae
      `-- Ursinae

Reference(s):

  • Abella, J., Alba, D. M., Robles, J. M., Valenciano, A., Rotgers, C., Carmona, R., Montoya, P. & Morales, J., 2012: Kretzoiarctos gen. nov., the Oldest Member of the Giant Panda Clade.
    –Plos One: Vol. 7, #11, pp. e48985 (1-7) [doi: 10.1371/journal.pone.0048985]

After Loreille, Orlando, Patou-Mathis, Philippe, Taberlet & Hänni, 2001

<==o Ursidae
   |-- Ailuropoda melanoleuca
   `--+-- Tremarctos ornatus
      `--+-- Melursus ursinus
         `--+--+-- Helarctos malayanus
            |  `--+-- Ursus thibetanus
            |     `-- Ursus americanus
            `--+-- †Ursus spelaeus
               `--+== Ursus arctos
                  `-- Ursus maritimus

Reference(s):

  • Loreille, O., Orlando, L., Patou-Mathis, M., Philippe, M., Taberlet, P. & Hänni, C., 2001: Ancient DNA analysis reveals divergence of the cave bear, Ursus spelaeus, and brown bear, Ursus arctos, lineages.
    –Current Biology: Vol. 11, #3, pp. 200-203 [doi: 10.1016/S0960-9822(01)00046-X]

Reference(s):