▁they ▁were ▁capable ▁of ▁b ip ed al ism , ▁though ▁this ▁is ▁disput ed . ▁ ▁Ne ck ▁post ure ▁ ▁Di pl od oc ids ▁like ▁A pat osa urus ▁are ▁often ▁port rayed ▁with ▁their ▁ne cks ▁held ▁high ▁up ▁in ▁the ▁air , ▁allowing ▁them ▁to ▁brow se ▁on ▁tall ▁trees . ▁Some ▁studies ▁state ▁di pl od oc id ▁ne cks ▁were ▁less ▁flexible ▁than ▁previously ▁believed , ▁because ▁the ▁structure ▁of ▁the ▁neck ▁verte bra e ▁would ▁not ▁have ▁allowed ▁the ▁neck ▁to ▁b end ▁far ▁up wards , ▁and ▁that ▁sau rop ods ▁like ▁A pat osa urus ▁were ▁adapted ▁to ▁low ▁brow sing ▁or ▁ground ▁feed ing . ▁ ▁Other ▁studies ▁by ▁Taylor ▁find ▁that ▁all ▁t et rap ods ▁appear ▁to ▁hold ▁their ▁ne cks ▁at ▁the ▁maximum ▁possible ▁vertical ▁extension ▁when ▁in ▁a ▁normal , ▁alert ▁post ure ; ▁they ▁argue ▁the ▁same ▁would ▁hold ▁true ▁for ▁sau rop ods ▁bar ring ▁any ▁unknown , ▁unique ▁characteristics ▁that ▁set ▁the ▁soft ▁t issue ▁an atom y ▁of ▁their ▁ne cks ▁apart ▁from ▁that ▁of ▁other ▁animals . ▁A pat osa urus , ▁like ▁Di pl od ocus , ▁would ▁have ▁held ▁its ▁neck ▁ang led ▁up wards ▁with ▁the ▁head ▁pointing ▁down wards ▁in ▁a ▁rest ing ▁post ure . ▁Kent ▁Stevens ▁and ▁Michael ▁Par r ish ▁( 1 9 9 9 ▁and ▁ 2 0 0 5 ) ▁state ▁A pat osa urus ▁had ▁a ▁great ▁feed ing ▁range ; ▁its ▁neck