[StandingFirm]

Simple. Think of it similar to a cemetery. If you find one on one side of the road, would you really expect to find one on the other side of the road? Not really, because bones are not spread evenly over the earth.Same thing with fossils -- they represent the remains of dead creatures and they are not spread equally across the ground. They didn't live equally spaced across the land and they didn't die that way. Additionally, things happen to the remains to keep them from being preserved in the rocks. For example, in the ocean currents may sweep an area clean constantly or even occasionally. On the land, floods, stream flow, mudflows, other "critters", etc. may disturb the remains so they are not found where they died or they may accumulate at the bottom of a ravine, etc.