▁Un like ▁other ▁sau rop ods , ▁whose ▁ne cks ▁could ▁grow ▁to ▁up ▁to ▁four ▁times ▁the ▁length ▁of ▁their ▁back s , ▁the ▁neck ▁of ▁Bra chy tra ch el op an ▁was ▁shorter ▁than ▁its ▁back bone . ▁ ▁On ▁or ▁shortly ▁before ▁ 2 9 ▁March ▁ 2 0 1 7 ▁a ▁sau rop od ▁foot print ▁about ▁ 5 . 6 ▁feet ▁( 1 . 7 ▁meters ) ▁long ▁was ▁found ▁at ▁Wal mad any ▁in ▁the ▁Kim ber ley ▁Region ▁of ▁Western ▁Australia . ▁The ▁report ▁said ▁that ▁it ▁was ▁the ▁biggest ▁known ▁yet . ▁ ▁Lim bs ▁and ▁feet ▁As ▁massive ▁quad rup eds , ▁sau rop ods ▁developed ▁special ized ▁gra vi portal ▁( weight - b ear ing ) ▁lim bs . ▁The ▁h ind ▁feet ▁were ▁broad , ▁and ▁retained ▁three ▁cla ws ▁in ▁most ▁species . ▁Part icular ly ▁unusual ▁compared ▁with ▁other ▁animals ▁were ▁the ▁highly ▁modified ▁front ▁feet ▁( man us ). ▁The ▁front ▁feet ▁of ▁sau rop ods ▁were ▁very ▁dis similar ▁from ▁those ▁of ▁modern ▁large ▁quad rup eds , ▁such ▁as ▁ele ph ants . ▁R ather ▁than ▁s play ing ▁out ▁to ▁the ▁sides ▁to ▁create ▁a ▁wide ▁foot ▁as ▁in ▁ele ph ants , ▁the ▁manus ▁b ones ▁of ▁sau rop ods ▁were ▁arranged ▁in ▁fully ▁vertical ▁columns , ▁with ▁extremely ▁reduced ▁finger ▁b ones ▁( though ▁it ▁is ▁not ▁clear ▁if ▁the ▁most ▁primitive ▁sau rop ods , ▁such ▁as ▁V ul can odon