haʊˈɛvɚ, sˈʌlɪvən oʊpˈaɪnd ðæt ðˈɪs "sˈuːtʃɚ" ɪz ɪnstˈɛd ɐ bɹˈeɪkɪdʒ pˈɔɪnt ɪn kwˈɑːdɹeɪts ʌv bˈoʊθ ɐlˈæskeɪsfˌeɪl ænd pˌækɪsˌɛfɐləsˈɔːɹəs, sˌoʊ ɪt kʊd nˌɑːt biː jˈuːzd tə juːnˈaɪt ðə tˈuː tˈæksə.
However, Sullivan opined that this "suture" is instead a breakage point in quadrates of both Alaskacephale and Pachycephalosaurus, so it could not be used to unite the two taxa.