its ▁or ▁aut ap omorph ies ▁in ▁which ▁Sci p iony x ▁differ ed ▁from ▁its ▁closest ▁relatives . ▁The ▁pra em ax illa ▁has ▁five ▁teeth . ▁Where ▁the ▁par iet al ▁and ▁the ▁front al ▁b one ▁make ▁contact , ▁the ▁de pression ▁in ▁which ▁the ▁su pr at empor al ▁fen estra , ▁a ▁sk ull ▁roof ▁opening , ▁was ▁present , ▁shows ▁a ▁sin uous ▁r idge ▁on ▁the ▁post orb ital . ▁The ▁lower ▁branch ▁of ▁the ▁squ amos al ▁has ▁a ▁rect angular ▁end . ▁The ▁w rist ▁consists ▁of ▁just ▁two , ▁super im posed , ▁b ones : ▁a ▁radial ▁and ▁a ▁lower ▁element ▁formed ▁by ▁a ▁fusion ▁of ▁the ▁first ▁and ▁second ▁car pal . ▁This ▁last ▁element ▁has ▁the ▁shape ▁of ▁a ▁l ens , ▁not ▁a ▁cres cent ; ▁is ▁fl atten ed ; ▁and ▁is ▁f used ▁se am lessly . ▁The ▁first ▁finger ▁is ▁consp ic u ously ▁el ong ated , ▁ 2 3 % ▁longer ▁than ▁the ▁third ▁finger . ▁The ▁not ch ▁in ▁the ▁front ▁edge ▁of ▁the ▁il ium ▁is ▁directed ▁to ▁the ▁front ▁and ▁only ▁weak ly ▁developed . ▁The ▁front ▁edge ▁of ▁the ▁is ch ium ▁sh aft ▁has ▁a ▁long ▁obt ur ator ▁process ▁with ▁a ▁rect angular ▁end . ▁ ▁Sk ull ▁ ▁The ▁sk ull ▁of ▁the ▁hol ot ype ▁is ▁large , ▁compared ▁to ▁the ▁size ▁of ▁the ▁body , ▁and ▁short ▁with ▁very ▁large ▁eye - so ckets .