▁This ▁is ▁largely ▁due ▁to ▁its ▁young ▁age . ▁According ly , ▁the ▁semi - circ ular ▁ant orb ital ▁fen estra , ▁the ▁normally ▁largest ▁sk ull ▁opening , ▁is ▁short ▁too ▁and ▁smaller ▁than ▁the ▁eye - socket . ▁In ▁front ▁of ▁it ▁two ▁smaller ▁open ings ▁are ▁present : ▁the ▁max ill ary ▁and ▁prom ax ill ary . ▁The ▁sn out ▁is ▁pointed ▁with ▁a ▁low ▁rounded ▁tip . ▁The ▁pre max illa , ▁the ▁b one ▁forming ▁the ▁front ▁of ▁the ▁sn out , ▁car ries ▁five ▁teeth . ▁The ▁max illa ▁behind ▁it , ▁is ▁deep ▁with ▁a ▁very ▁short ▁front ▁branch . ▁It ▁car ries ▁seven ▁teeth . ▁The ▁de pression ▁in ▁its ▁surface ▁for ▁the ▁ant orb ital ▁opening ▁is ▁bounded ▁by ▁a ▁r idge . ▁The ▁la cr imal ▁is ▁robust ▁and ▁la cks ▁a ▁horn ; ▁its ▁side ▁is ▁not ▁pier ced ▁by ▁a ▁for amen . ▁The ▁pre front al ▁is ▁exception ally ▁large , ▁forming ▁a ▁large ▁part ▁of ▁the ▁front ▁upper ▁edge ▁of ▁the ▁eye - socket . ▁The ▁front al ▁b ones ▁have ▁a ▁trans verse ▁r idge ▁at ▁their ▁back . ▁Between ▁the ▁front als ▁and ▁the ▁par iet als ▁the ▁sk ull ▁roof ▁over ▁a ▁limited ▁distance ▁has ▁not ▁closed ▁yet , ▁resulting ▁in ▁a ▁consp ic uous ▁diam ond - sh aped ▁opening , ▁a ▁font an elle ▁that ▁was ▁first ▁mistaken ▁for ▁damage ▁inf lic ted ▁on ▁the ▁foss il ▁during ▁the ▁first ▁prepar ation