The question is to some degree related to the question of the toleration of scavengers in the Great Valley which has been discussed in another thread. If there were no scavengers in the Great Valley at all bodies would have to be brought somewhere where Scavengers can be found. However, it is one thing to bring some small dinosaur somewhere, but who would carry Littlefoot's grandpa anywhere?
I don't think there are any "burial rituals" comparable to that of humans.
There doesn't seem to be any kind of religious or philosophical sensitivity about Skeletons or bodies. The attempt to get a tooth from the presumed dead sharptooth in LBT 6 was already mentioned, but the original movie provides some examples too. Nobody is very concerned about that skeleton Littlefoot, Ducky, and Petrie run into before they meet Cera, and later on Spike has a bone in his mouth while he and the others are posing as the tar monster.