. ▁On ▁its ▁inner ▁side ▁the ▁su pr at empor al ▁fen estra ▁has ▁no ▁de pression , ▁being ▁bounded ▁by ▁a ▁high ▁edge ▁of ▁the ▁par iet al . ▁The ▁jug al ▁has ▁no ▁front ▁vertical ▁branch ▁towards ▁the ▁la cr imal . ▁The ▁quadr ate ▁b one ▁has ▁on ▁its ▁front ▁edge ▁a ▁large ▁wing - like ▁expansion , ▁touch ing ▁the ▁p tery go id . ▁The ▁b ones ▁of ▁the ▁bra inc ase ▁are ▁largely ▁in access ible ▁but ▁a ▁small ▁inner ▁ear ▁opening , ▁the ▁re cess us ▁tym pan icus ▁d ors alis , ▁is ▁visible . ▁The ▁unders ide ▁of ▁the ▁bra inc ase ▁la cks ▁an ▁infl ated ▁part ▁or ▁bul la . ▁ ▁The ▁lower ▁j aw ▁is ▁straight ▁and ▁el ong ated . ▁The ▁j aw ▁b one ▁is ▁rather ▁low : ▁the ▁spec imen ▁creates ▁the ▁ill usion ▁of ▁a ▁strong ▁j aw ▁because ▁the ▁left ▁j aw ▁is ▁visible ▁below ▁the ▁right ▁one . ▁It ▁be ars ▁ten ▁teeth . ▁In ▁the ▁ 1 9 9 8 ▁description ▁a ▁part ▁of ▁the ▁spl en ial ▁was ▁mistaken ▁for ▁a ▁su pr ad ent arium ▁and ▁the ▁angular ▁was ▁mis ident ified ▁as ▁the ▁sur angular ▁because ▁in ▁the ▁foss il ▁it ▁had ▁been ▁disp la ced ▁up wards , ▁creating ▁the ▁false ▁impression ▁an ▁external ▁mand ib ular ▁fen estra , ▁an ▁opening ▁in ▁the ▁outer ▁side ▁of ▁the ▁j aw , ▁would ▁be ▁present . ▁ ▁Sci p iony x