Title page missing; title from letter of transmittal.
Contents:
no. 2. Cretaceous fossils of the western states and territories --no. 3. Certain tertiary mollusca from Colorado, Utah, and Wyoming -- no. 4. Fossils of the Laramie group -- no. 5. Triassic fossils of southeastern Idaho -- no. 6. Certain carboniferous fossils from the western states and territories -- no. 7. Jurassic fossils from the western territories -- no. 8. Fossils from the carboniferous rocks of the interior states