The fossil was then deposited in the University of Alaska Museum and described in 2005 by Roland Gangloff and colleagues as belonging to a pachycephalosaurine closely related to, and possibly, Pachycephalosaurus.
ðə fˈɑːsəl wʌz ðˈɛn dᵻpˈɑːzɪɾᵻd ɪnðə jˌuːnɪvˈɜːsᵻɾi ʌv ɐlˈæskə mjuːzˈiəm ænd dᵻskɹˈaɪbd ɪn tˈuː θˈaʊzənd fˈaɪv baɪ ɹˈoʊlənd ɡˈæŋɡlɔf ænd kˈɑːliːɡz æz bᵻlˈɔŋɪŋ tʊ ɐ pˌækɪsˌɛfɐləsˈɔːɹiːn klˈoʊsli ɹᵻlˈeɪɾᵻd tuː, ænd pˈɑːsᵻbli, pˌækɪsˌɛfɐləsˈɔːɹəs.