. ▁Due ▁to ▁the ▁gra cile ▁architecture ▁of ▁the ▁mus cle ▁attach ments , ▁it ▁is ▁possible ▁the ▁individual ▁was ▁a ▁female . ▁Many ▁of ▁the ▁mand ib ular ▁teeth ▁are ▁still ▁present ▁and ▁in ▁great ▁condition . ▁The ▁third ▁mol ar ▁was ▁only ▁partially ▁er upt ed ▁upon ▁death , ▁which ▁indicates ▁that ▁the ▁individual ▁was ▁likely ▁a ▁young ▁adult . ▁ ▁Tax onomy ▁ ▁Like ▁Sk ull ▁ 1 , ▁Sk ull ▁ 2 ▁represents ▁a ▁m osa ic ▁of ▁primitive ▁and ▁derived ▁tra its ▁that ▁may ▁indicate ▁it ▁belonged ▁to ▁a ▁H . ▁erg aster ▁population ▁that ▁had ▁under g one ▁morph ological ▁changes ▁due ▁to ▁ge ographic ▁separation . ▁ ▁Similar ities ▁with ▁H omo ▁erg aster : ▁▁ ▁Th in , ▁tall ▁c ran ial ▁v ault ▁ ▁N arrow ▁post - orb ital ▁region ▁ ▁O c cip ital ▁relief ▁ ▁N arrow ▁al ve olar ▁arch ▁ ▁Mod er ately ▁s ized ▁brow ▁rid ges ▁ ▁Similar ▁to oth ▁morph ology ▁ ▁Similar ▁eye ▁or bits ▁bread th ▁ ▁D iffer ences ▁from ▁H omo ▁erg aster : ▁▁ ▁An terior ly ▁short ▁max illa ▁and ▁mand ible ▁ ▁N arrow ▁p yr iform ▁a pert ure ▁ ▁N arrow ▁c ran ial ▁v ault ▁ ▁Develop ed ▁mand ib ular ▁sym ph ysis ▁ ▁Small ▁prem ol ars ▁ ▁Sk ull ▁ 3 ▁▁ ▁The ▁Sk ull ▁ 3 ▁c ran ium ▁( D 2 7 0 0 ) ▁and ▁its ▁associated ▁mand ible ▁(