▁could ▁b end ▁into ▁a ▁U - shape ▁later ally . ▁The ▁neck ' s ▁range ▁of ▁movement ▁would ▁have ▁also ▁allowed ▁the ▁head ▁to ▁feed ▁at ▁the ▁level ▁of ▁the ▁feet . ▁ ▁Matthew ▁Co ble y ▁et ▁al . ▁( 2 0 1 3 ) ▁dispute ▁this , ▁finding ▁that ▁large ▁mus cles ▁and ▁cart il age ▁would ▁have ▁limited ▁movement ▁of ▁the ▁neck . ▁They ▁state ▁the ▁feed ing ▁ranges ▁for ▁sau rop ods ▁like ▁Di pl od ocus ▁were ▁smaller ▁than ▁previously ▁believed , ▁and ▁the ▁animals ▁may ▁have ▁had ▁to ▁move ▁their ▁whole ▁bodies ▁around ▁to ▁better ▁access ▁areas ▁where ▁they ▁could ▁brow se ▁veget ation . ▁As ▁such , ▁they ▁might ▁have ▁spent ▁more ▁time ▁for aging ▁to ▁meet ▁their ▁minimum ▁energy ▁needs . ▁The ▁conclus ions ▁of ▁Co ble y ▁et al . ▁are ▁disput ed ▁by ▁Taylor , ▁who ▁analyz ed ▁the ▁amount ▁and ▁position ing ▁of ▁inter verte br al ▁cart il age ▁to ▁determine ▁the ▁flex ibility ▁of ▁the ▁neck ▁of ▁A pat osa urus ▁and ▁Di pl od ocus . ▁He ▁found ▁that ▁the ▁neck ▁of ▁A pat osa urus ▁was ▁very ▁flexible . ▁ ▁Phys i ology ▁ ▁Given ▁the ▁large ▁body ▁mass ▁and ▁long ▁neck ▁of ▁sau rop ods ▁like ▁A pat osa urus , ▁phys i olog ists ▁have ▁encountered ▁problems ▁determ ining ▁how ▁these ▁animals ▁bre athed . ▁Begin ning ▁with ▁the ▁assumption ▁that , ▁like ▁cro cod ili ans , ▁A pat osa urus ▁did ▁not ▁have