ial ▁ske leton , ▁including ▁twenty - n ine ▁verte bra e ▁of ▁the ▁neck , ▁back ▁and ▁tail ; ▁rib s ; ▁elements ▁of ▁the ▁shoulder ▁g ird le ▁and ▁a ▁for el imb ; ▁an ▁il ium ; ▁both ▁pub is ▁and ▁the ▁h ind lim bs . ▁It ▁represents ▁an ▁adult ▁individual . ▁ ▁B urr er ▁sent ▁the ▁spec imen ▁to ▁Professor ▁E ber hard ▁Fra as ▁of ▁the ▁k önig liche ▁Stutt g arter ▁Natural ien k ab in ett . ▁In ▁a ▁lecture ▁on ▁ 9 ▁October ▁ 1 9 1 1 , ▁Fra as ▁referred ▁to ▁it ▁by ▁the ▁name ▁" H al lop us ▁cel err im us ", ▁considering ▁it ▁jump ing ▁form ▁of ▁din osa ur ▁that ▁was ▁approximately ▁ ▁long , ▁and ▁was ▁associated ▁with ▁the ▁origin ▁of ▁birds . ▁ ▁Later , ▁Fra as ▁decided ▁to ▁use ▁a ▁different ▁name ▁in ▁the ▁official ▁publication . ▁Fra as ▁in ▁ 1 9 1 3 ▁named ▁the ▁genus ▁Pro com ps ogn ath us ▁with ▁as ▁type ▁species , ▁Pro com ps ogn ath us ▁tri ass icus . ▁The ▁type ▁spec imen ▁is ▁hous ed ▁in ▁the ▁collection ▁of ▁the ▁State ▁Museum ▁of ▁Natural ▁History ▁in ▁Stuttgart , ▁Germany . ▁ ▁In ▁ 1 9 2 1 , ▁Friedrich ▁von ▁Hu ene ▁referred ▁two ▁more ▁spec im ens , ▁both ▁also ▁found ▁in ▁the ▁B urr er ▁quar ry , ▁in ▁ 1 9 0 8 , ▁to ▁Pro com ps ogn