▁b one ▁content ▁in ▁the ▁cop rol ites ▁of ▁large ▁ther op ods . ▁Fish ▁contains ▁much ▁calci um ▁and ▁it ▁is ▁possible ▁that ▁the ▁h atch ling ▁instinct ively ▁sought ▁it ▁out ; ▁altern atively , ▁it ▁could ▁have ▁been ▁prefer entially ▁fed ▁fish ▁by ▁its ▁parents . ▁The ▁presence ▁of ▁skin ▁in ▁the ▁fa ec es ▁was ▁to ▁be ▁expected ▁as ▁this ▁is ▁not ▁easily ▁dig ested . ▁ ▁The ▁body ▁parts ▁of ▁the ▁large ▁le pid osa ur ian ▁in ▁the ▁st om ach ▁had ▁been ▁made ▁more ▁dig est ible ▁by ▁bit ing ▁them ▁into ▁pieces . ▁According ▁to ▁Dal ▁S asso ▁& ▁Mag anu co ▁the ▁h atch ling ▁would ▁certainly ▁have ▁been ▁in cap able ▁of ▁ach ieving ▁this ▁and ▁they ▁considered ▁it ▁a ▁strong ▁indic ation ▁of ▁parent al ▁care ▁as ▁it ▁was ▁impro b able ▁the ▁animal ▁had ▁by ▁chance ▁encountered ▁a ▁car c ass ▁neat ly ▁ri pped ▁apart ▁into ▁easily ▁sw allowed ▁bits ▁by ▁pred ators ▁or ▁sc av engers . ▁ ▁Res p iration ▁Although ▁most ▁of ▁the ▁resp ir atory ▁system ▁has ▁not ▁been ▁preserved , ▁some ▁far - re aching ▁conclus ions ▁have ▁been ▁drawn ▁from ▁the ▁indirect ▁evidence ▁available . ▁In ▁ 1 9 9 9 ▁John ▁Rub en ▁e . a . ▁infer red ▁that ▁Sci p iony x ▁had ▁a ▁resp ir atory ▁system ▁different ▁from ▁birds , ▁and ▁more ▁similar ▁to ▁cro cod iles , ▁based ▁on ▁an ▁analysis ▁of ▁pictures ▁of ▁the ▁foss il ▁which