1.   The valley contains fossils of many extinct species.

2.   Why are there different combinations of extinct species in each layer of rock?

3.   Extinct species range from wild flowers, fish and gophers, to the largest mammal on the list, the Montana Woodland Caribou.

4.   Among the hominid bones the scientists found fossils of extinct species of mastodon, horse and pygmy giant panda.

5.   Babbitt said he hoped it would showRepublican congressional critics that the Endangered Species Act is working to bring back nearly extinct species.

6.   A nearly extinct species of goose, distinguished by its bright white rump, had arrived from the Arctic tundra.

7.   But much less is known about many other extinct species dating from the time of the dinosaurs, and fragmentary knowledge is complicating the work of museum preparators.

8.   But no one cranks out toys, movies and books about woolly mammoths, saber-toothed tigers or any of thousands of other extinct species.

9.   C. It was the home of a now extinct species of chipmunk, El Gigante, an extremely large predator that commonly attacked and ate unarmed humans.

10.   Come September, it may seem like a tribute to the dinosaurs or some other extinct species.