Dig Deep

Remember when you were a kid, and you'd dream of finding dinosaur bones, and you'd dig for them in the sandbox?

What the hell were you thinking, that there would be bones in there just because its the easiest, most convenient place to dig?

That's exactly why there won't be any bones, because every kid in the neighborhood had already taken the 15 minutes to dig down to clay-level.  If any dinosaurs died in that sandbox, they would have been found a long time ago.

Maybe you have to go under the clay to find this stuff.