Ellis Leon Yochelson

1928

• Charles Doolittle Walcott, Paleontologist
• Charles Doolittle Walcott, paleontologist
• Essays in paleontology & stratigraphy
• Paleobiology of Climactichnites
• Smithsonian Institution Secretary, Charles Doolittle Walcott
• The National Museum of Natural History
• A bibliographic index of North American late Paleozoic Hyolitha, Amphineura, Scaphopoda, and Gastropoda
• Biostratigraphy of the Phosphoria, Park City, and Shedhorn Formation
• Biostratigraphy of the Phosphoria, Park City, and Shedhorn formations
• Images of the U.S. Geological Survey, 1879-1979
• Late paleozoic gastropoda from Northern Alaska
• Mattheva, a proposed new class of mollusks