To find dinosaurs, you start by looking in the right places.

3. Ideal Fossil Conditions

These exposed strata form a five-million-year slice of the last chapter of dinosaur history. Some 75 million years ago, this area was a vast swampland, reminiscent of today's Louisiana bayous. Shifting sandbars, dense vegetation causing accumulating muck, and natural burial by frequent flooding--all these conditions make for an ideal environment for preserving the bodies of fallen animals as fossils, especially large animals with sturdy bones. When such an environment is heavily populated with dinosaurs, this makes for quite a lot of fossils. The result is that today these sediments are packed with dinosaur bones.