Preliminary Report on the Paleontology of the Black Hills, by R.P. Whitfield, Containing Descriptions of New Species of Fossils from the Potsdam, Jurassic and Cretaceous Formations of the Black Hills of Dakota

Auteur : Robert Parr Whitfield

Date de publication : 1877

Éditeur : U.S. Government Printing Office

Nombre de pages : 49