. ▁There ▁is ▁evidence ▁that ▁the ▁individual ▁dam aged ▁its ▁right ▁z yg om atic ▁arch ▁in ▁life , ▁as ▁indic ations ▁of ▁in ▁v ivo ▁he aling ▁are ▁present . ▁Its ▁highly ▁robust ▁architecture , ▁namely ▁its ▁marked ▁pro gn ath ism , ▁fl aring ▁z yg om atic ▁arch es , ▁and ▁tall ▁and ▁wide ▁fa cial ▁shape ▁strongly ▁indicate ▁the ▁individual ▁was ▁male . ▁ ▁Tax onomy ▁ ▁The ▁apparent ▁differences ▁between ▁Sk ull ▁ 5 ▁and ▁typical ▁H . ▁ere ct us ▁have ▁lead ▁some ▁research ▁to ▁class ify ▁it ▁as ▁a ▁separate ▁species , ▁H omo ▁ge org icus , ▁while ▁others ▁ins ist ▁it ▁is ▁evidence ▁of ▁the ▁wide ▁range ▁of ▁variation ▁among ▁the ▁bro ader ▁H . ▁ere ct us ▁population . ▁ ▁Similar ities ▁with ▁H omo ▁hab ilis ▁▁ ▁Small ▁c ran ial ▁capacity ▁ ▁Similar ▁max ill ary ▁structure ▁ ▁Similar ▁d ento - al ve olar ▁structures . ▁ ▁Sign ific ant ▁pro gn ath ism ▁ ▁Similar ities ▁with ▁H omo ▁erg aster ▁▁ ▁Similar ▁mid fa cial ▁architecture ▁ ▁W ide ▁nas o - al ve olar ▁cl iv us ▁ ▁Body ▁size ▁and ▁stat ure ▁( Est im ated ) ▁ ▁Lar ge , ▁bar - like ▁brow ▁rid ges ▁ ▁S lop ing ▁front al ▁squ ama ▁ ▁Stone ▁tools ▁▁ ▁Over ▁ 1 0 0 0 ▁Ple ist oc ene ▁stone ▁tools ▁have ▁been ▁un cover ed , ▁including ▁Old owan ▁( Mode ▁ 1 ) ▁cho