▁and ▁middle ▁branches . ▁According ▁to ▁the ▁scient ists , ▁the ▁special izing ▁of ▁their ▁di ets ▁helped ▁the ▁different ▁her b iv orous ▁din osa urs ▁to ▁co exist . ▁ ▁Ne cks ▁ ▁Sau rop od ▁ne cks ▁have ▁been ▁found ▁at ▁over ▁ ▁in ▁length , ▁a ▁full ▁six ▁times ▁longer ▁than ▁the ▁world ▁record ▁g ira ffe ▁neck . ▁En abling ▁this ▁were ▁a ▁number ▁of ▁essential ▁phys i ological ▁features . ▁The ▁din osa urs ’ ▁overall ▁large ▁body ▁size ▁and ▁quad ru ped al ▁st ance ▁provided ▁a ▁stable ▁base ▁to ▁support ▁the ▁neck , ▁and ▁the ▁head ▁was ▁evol ved ▁to ▁be ▁very ▁small ▁and ▁light , ▁losing ▁the ▁ability ▁to ▁or ally ▁process ▁food . ▁By ▁reducing ▁their ▁heads ▁to ▁simple ▁har vest ing ▁tools ▁that ▁got ▁the ▁plants ▁into ▁the ▁body , ▁the ▁sau rop ods ▁needed ▁less ▁power ▁to ▁lift ▁their ▁heads , ▁and ▁thus ▁were ▁able ▁to ▁develop ▁ne cks ▁with ▁less ▁dense ▁mus cle ▁and ▁connect ive ▁t issue . ▁This ▁dr ast ically ▁reduced ▁the ▁overall ▁mass ▁of ▁the ▁neck , ▁en abling ▁further ▁el ong ation . ▁ ▁Sau rop ods ▁also ▁had ▁a ▁great ▁number ▁of ▁adapt ations ▁in ▁their ▁ske let al ▁structure . ▁Some ▁sau rop ods ▁had ▁as ▁many ▁as ▁ 1 9 ▁cer v ical ▁verte bra e , ▁whereas ▁almost ▁all ▁m amm als ▁are ▁limited ▁to ▁only ▁seven . ▁Additionally , ▁each ▁verte bra ▁was ▁extremely ▁long ▁and ▁had ▁a ▁number ▁of