▁to ▁have ▁visitors ▁understand ▁the ▁amaz ing ▁divers ity ▁among ▁P ter osa urs . ▁Ex hib it ▁volunte ers ▁helped ▁to ▁achieve ▁this ▁goal ▁by ▁building ▁everything ▁from ▁“ rock ▁blocks ” ▁and ▁puzz les , ▁to ▁actual ▁models ▁of ▁the ▁f liers ▁themselves . ▁Don ▁P uffer ▁created ▁a ▁ 4 - foot ▁mechanical ▁D s ung ar ip ter ous ▁p ter osa ur ▁also ▁known ▁as ▁“ C lam ▁D igger ” ▁that ▁demonstrated ▁the ▁opening ▁and ▁closing ▁of ▁its ▁wings . ▁Ed ▁Mack ' s ▁sculpt ure ▁P ter an odon ▁stern berg i ▁is ▁a ▁st unning ▁life - size ▁model ▁that ▁should ▁amaz e ▁the ▁museum ▁audience ▁and ▁now ▁hang s ▁over ▁Din osa ur ▁Mountain . ▁ ▁" R ul ers ▁of ▁the ▁Pre histor ic ▁Sk ies " ▁was ▁part ▁of ▁a ▁M esa ▁Arts ▁and ▁Culture ▁First ▁Fl ight ▁initi ative ▁and ▁focused ▁on ▁flying ▁re pt iles ; ▁however ▁the ▁exhib it ▁also ▁expl ored ▁the ▁evolution ▁of ▁flight ▁from ▁insect s , ▁the ▁true ▁first ▁fly ers , ▁to ▁birds ▁and ▁b ats . ▁ ▁The ▁" R ul ers ▁of ▁the ▁Pre histor ic ▁Sk ies " ▁exhib it ▁opened ▁on ▁February ▁ 4 , ▁ 2 0 1 2 , ▁and ▁ran ▁for ▁approximately ▁four ▁years ▁due ▁to ▁its ▁popular ity . ▁ ▁Another ▁of ▁the ▁changing ▁exhib its ▁was ▁" The ▁Pr imal ▁Des ert ▁Next ▁Do or : ▁Land ▁of ▁Black ▁Vol cano es ▁and ▁White ▁S