Talk:Mamenchisaurus/@comment-34934380-20190308072810

if Mamenchisaurus  as on nublar durning the events of i would expect there to be heavy casualties because due to there size and so far we do not know if any Mamenchisaurus  are saved so the species  might have gone extinct due too there size and being bigger then the brachiosaurus the Mamenchisaurus  might have well fallen back into extinction.