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Continuity: After the dinosaurs are on the island, they see that the path they crossed to get there is gone, so they have no way of getting back. Then when they call their parents a little bit of the path and some rocks (that weren't there before) suddenly reappear. Then when they sail back on the log about half of the path is restored.
Continuity: When the traveling dinosaurs see the skeleton of the duckbill, the shot changes to a view from above. There you see the duckbill's footsteps. If he had turned into a skeleton that means he had been dead for a long time. There is no possible way his tracks would still be in the sand. In addition, his footprints show only two fingers while the bones have three fingers.