; ▁a ▁nearly ▁horizontal ▁quadr ate ▁that ▁is ▁not ▁f used ▁and ▁is ▁orient ed ▁ 3 0 ▁degrees ▁from ▁the ▁sk ull ▁roof ; ▁the ▁presence ▁of ▁mand ib ular ▁cond yles ▁that ▁are ▁three ▁times ▁wider ▁than ▁long ; ▁pre max ill ary ▁and ▁dent ary ▁teeth ▁that ▁are ▁near ▁a ▁sym ph ysis ▁with ▁the ▁front ▁of ▁the ▁lower ▁j aw ▁( the ▁pred ent ary ); ▁a ▁sac rum ▁arch ed ▁on ▁top ; ▁an ▁ac rom ion ▁process ▁above ▁the ▁mid point ▁of ▁the ▁sc ap ula ▁to ▁cor ac oid ▁attachment ; ▁a ▁straight ▁is ch ium ▁with ▁a ▁straight ▁d ors al ▁margin ; ▁relatively ▁long , ▁sl ender ▁lim bs ; ▁sac ral ▁shield ▁arm our ; ▁and ▁the ▁presence ▁of ▁ere ct ▁pel vic ▁o ste od erm s ▁with ▁flat ▁bases ▁- ▁form ▁a ▁cla de ▁of ▁bas al ▁nod osa ur ids , ▁the ▁Str uth ios aur inae . ▁That ▁set ▁of ▁c ran ial ▁and ▁post c ran ial ▁features ▁are ▁only ▁present ▁on ▁gener a ▁considered ▁to ▁be ▁in ▁the ▁cla de . ▁The ▁features ▁above ▁distinguish ▁Str uth ios aur inae ▁from ▁other ▁cl ades ▁and ▁gener a ▁found ▁by ▁other ▁analysis '. ▁ ▁Bi oge ography ▁ ▁The ▁near ▁simultane ous ▁appearance ▁of ▁nod osa ur ids ▁in ▁both ▁North ▁America ▁and ▁Europe ▁is ▁worthy ▁of ▁consideration , ▁because ▁at ▁the ▁time , ▁they ▁were ▁separated ▁from ▁each ▁other ▁by ▁a ▁huge ▁body ▁of ▁water . ▁Europ