Fossils were uncovered on 2 sites in north central Oregon.

Fossils were uncovered throughout most of the western United States.

The site was retained for some years in the expectation that erosion would uncover new fossils.

Fossils were uncovered in the northern plains states.

Many Native American peoples believe it is bad luck to uncover fossils from their place of burial.

They also uncovered fossils from fish, crabs, coelacanth and crocodile-like species.

Fossils have been uncovered from Florida to Texas.

Fossils have been uncovered in several locations in the western U.S.

Explorations of Mars - relatively dry now but wet long ago, scientists believe - are considered more likely to uncover fossils than extant forms.

Fossils have been uncovered in California, Maryland, western Nebraska, and Texas.