oph ysis ▁ba uri . ▁ ▁In ▁ 1 9 9 8 ▁Ch atter je e ▁noted ▁that ▁the ▁sk ull ▁of ▁Pro com ps ogn ath us ▁poss esses ▁a ▁suite ▁of ▁ther op od ▁syn ap omorph ies , ▁which ▁included : ▁ ▁the ▁presence ▁of ▁an ▁access ory ▁max ill ary ▁fen estra ▁ ▁the ▁vom ers ▁are ▁f used ▁ro str ally ▁and ▁are ▁extended ▁consider ably ▁forward ▁to ▁the ▁cho ana ▁ ▁the ▁single ▁quadr ate ▁head ▁is ▁received ▁completely ▁by ▁squ amos al ▁without ▁par oc cip ital ▁contact ▁ ▁the ▁later os hen oid ▁poss esses ▁a ▁trans verse ▁post orb ital ▁process ▁ ▁the ▁orbit os phen oid s ▁are ▁f used ▁ ▁Classification ▁ ▁Type ▁spec imen ▁SM NS ▁ 1 2 5 9 1 ▁While ▁it ▁is ▁und ou bt edly ▁a ▁small , ▁b ip ed al ▁car n iv ore , ▁the ▁extremely ▁poor ▁pres ervation ▁of ▁the ▁only ▁known ▁Pro com ps ogn ath us ▁foss il ▁makes ▁its ▁exact ▁identity ▁difficult ▁to ▁determine . ▁Fra as ▁originally ▁assigned ▁it ▁to ▁the ▁Din osa uria . ▁In ▁ 1 9 2 3 ▁Franz ▁N op cs a ▁co ined ▁a ▁Pro com ps ogn ath inae , ▁and ▁in ▁ 1 9 2 9 ▁von ▁Hu ene ▁created ▁a ▁Pro com ps ogn ath idae , ▁though ▁these ▁concepts ▁are ▁today ▁rarely ▁used . ▁In ▁ 1 9 3 2 ▁von ▁Hu ene ▁saw ▁it ▁as ▁a ▁member ▁of ▁the