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Marciszak A & Lipecki P (2020). "The history of bears (Ursidae, Carnivora, Mammalia) from Silesia (southern Poland) and the neighbouring areas". Geological Quarterly64(4): p. 876–897 (页面存档备份,存于互联网档案馆)
Qui Z-X, Deng T & Wang B-Y. (2014). "A Late Miocene Ursavus skull from Guanghe, Gansu, China". Vertebrata PalAsiatica52(3): p. 265-302 (页面存档备份,存于互联网档案馆)
Jiangzuo Q & Flynn J.H. (2020). "The Earliest Ursine Bear Demonstrates the Origin of Plant-Dominated Omnivory in Carnivora". IScience23(6): doi.org/10.1016/j.isci.2020.101235 (页面存档备份,存于互联网档案馆)