Mississippi River | River Thames | Amazon River | Columbia River | Green Day | Hudson River | Green Party | Colorado River | Potomac River | river | Ohio River | Green Bay Packers | Missouri River | Delaware River | Murray River | River Tyne | Madeira River | Green Bay, Wisconsin | Volga River | River Nene | River Clyde | River Trent | River Severn | Amur River | Amazon Basin | River Wear | Allegheny River | Red River | Dnieper River | Yarra River |
He also made extensive Jurassic collections at Como Bluff, Wyoming, in the Cretaceous deposits in Kansas, and Cenozoic formations of the Green River Basin and the Badlands of South Dakota.