ts ▁et ▁al ., ▁Argent in osa urus ▁was ▁digit ally ▁re construct ed ▁to ▁test ▁its ▁lo com otion ▁for ▁the ▁first ▁time . ▁Before ▁the ▁study , ▁the ▁most ▁common ▁way ▁of ▁estim ating ▁speed ▁was ▁through ▁studying ▁b one ▁hist ology ▁and ▁ich n ology . ▁Comm only , ▁studies ▁about ▁sau rop od ▁b one ▁hist ology ▁and ▁speed ▁focus ▁on ▁the ▁post c ran ial ▁ske leton , ▁which ▁holds ▁many ▁unique ▁features , ▁such ▁as ▁an ▁en larg ed ▁process ▁on ▁the ▁ul na , ▁a ▁wide ▁lo be ▁on ▁the ▁il ia , ▁an ▁in ward - slant ing ▁top ▁third ▁of ▁the ▁fem ur , ▁and ▁an ▁extremely ▁o void ▁fem ur ▁sh aft . ▁Those ▁features ▁are ▁useful ▁when ▁attempting ▁to ▁explain ▁track way ▁patterns ▁of ▁gra vi portal ▁animals . ▁When ▁studying ▁ich n ology ▁to ▁calculate ▁sau rop od ▁speed , ▁there ▁are ▁a ▁few ▁problems , ▁such ▁as ▁only ▁providing ▁estimates ▁for ▁certain ▁ga its ▁because ▁of ▁pres ervation ▁bias , ▁and ▁being ▁subject ▁to ▁many ▁more ▁accuracy ▁problems . ▁ ▁To ▁estimate ▁the ▁g ait ▁and ▁speed ▁of ▁Argent in osa urus , ▁the ▁study ▁performed ▁a ▁mus cul os ke let al ▁analysis . ▁The ▁only ▁previous ▁mus cul os ke let al ▁anal ys es ▁were ▁conducted ▁on ▁hom ino ids , ▁terror ▁birds , ▁and ▁other ▁din osa urs . ▁Before ▁they ▁could ▁conduct ▁the ▁analysis , ▁the ▁team ▁had ▁to ▁create ▁a ▁digital ▁ske leton ▁of