白熊龙由安东尼·菲奥里洛(英语:Anthony Fiorillo)(Anthony R. Fiorillo)和罗纳德·迪克斯基(Ronald S. Tykoski)于2014年首次描述并命名,模式种是霍氏白熊龙(Nanuqsaurus hoglundi)。属名取自伊努皮克语nanuq(北极熊)及希腊语sauros(蜥蜴),种名致敬慈善家弗雷斯特·霍格伦德(Forrest Hoglund)在慈善事业及文化机构方面的工作。[4]
^ 5.05.15.2Druckenmiller, Patrick S.; Erickson, Gregory M.; Brinkman, Donald; Brown, Caleb M.; Eberle, Jaelyn J. Nesting at extreme polar latitudes by non-avian dinosaurs. Current Biology. 2021-06-24, 31 (16): 3469–3478.e5. ISSN 0960-9822. PMID 34171301. doi:10.1016/j.cub.2021.05.041(英语). 我们注意到,UAMES藏品中的其它王子溪组暴龙科材料没有为白熊龙是种小型暴龙类的断言提供支持。相反,成年尺寸的牙齿及关节连接的颅后材料表明,成体尺寸更接近其它北美暴龙科分类单元如肉食阿尔伯塔龙
^Voris, Jared T.; Therrien, François; Zelenitsky, Darla K.; Brown, Caleb M. A new tyrannosaurine (Theropoda:Tyrannosauridae) from the Campanian Foremost Formation of Alberta, Canada, provides insight into the evolution and biogeography of tyrannosaurids. Cretaceous Research. 2020-06-01, 110: 104388. ISSN 0195-6671. S2CID 213838772. doi:10.1016/j.cretres.2020.104388(英语).
^Fiorillo, Anthony R.; Gangloff, Roland A. Theropod teeth from the Prince Creek Formation (Cretaceous) of northern Alaska, with speculations on Arctic Dinosaur paleoecology. Journal of Vertebrate Paleontology. 2000, 20 (4): 675. doi:10.1671/0272-4634(2000)020[0675:TTFTPC]2.0.CO;2.