▁her b iv orous ▁di et . ▁The ▁sn out ▁of ▁A pat osa urus ▁and ▁similar ▁di pl od oc oid s ▁is ▁squ ared , ▁with ▁only ▁N ig ers aur us ▁having ▁a ▁squ ar er ▁sk ull . ▁The ▁bra inc ase ▁of ▁A pat osa urus ▁is ▁well ▁preserved ▁in ▁spec imen ▁BY U 1 7 0 9 6 , ▁which ▁also ▁preserved ▁much ▁of ▁the ▁ske leton . ▁A ▁ph y log en etic ▁analysis ▁found ▁that ▁the ▁bra inc ase ▁had ▁a ▁morph ology ▁similar ▁to ▁those ▁of ▁other ▁di pl od oc oid s . ▁Some ▁sk ull s ▁of ▁A pat osa urus ▁have ▁been ▁found ▁still ▁in ▁art ic ulation ▁with ▁their ▁teeth . ▁Those ▁teeth ▁that ▁have ▁the ▁en am el ▁surface ▁exposed ▁do ▁not ▁show ▁any ▁scratch es ▁on ▁the ▁surface ; ▁instead , ▁they ▁display ▁a ▁sug ary ▁texture ▁and ▁little ▁wear . ▁ ▁Like ▁those ▁of ▁other ▁sau rop ods , ▁the ▁neck ▁verte bra e ▁are ▁deeply ▁b if ur c ated ; ▁they ▁carried ▁neural ▁sp ines ▁with ▁a ▁large ▁tr ough ▁in ▁the ▁middle , ▁resulting ▁in ▁a ▁wide , ▁deep ▁neck . ▁The ▁verte br al ▁formula ▁for ▁the ▁hol ot ype ▁of ▁A . lou is ae ▁is ▁ 1 5 cer v ical s , ▁ 1 0 d ors als , ▁ 5 s ac r als , ▁and ▁ 8 2 ca ud als . ▁The ▁ca ud al ▁verte bra