Elmer S. Riggs

1869 – 1963

• A skeleton of Astrapotherium
• A specimen of Elasmosaurus serpentinus
• Mounted skeleton of Homalodotherium
• New or little known titanotheres from the lower Uintah formations
• Preliminary description of a new marsupial sabertooth from the Pliocene of Argentina
• Preliminary description of two Lower Miocene carnivores
• Some early Miocene carnivores
• The carapace and plastron of Basilemys sinuosus
• The geological history and evolution of the horse
• The Mylagaulidæ
• A new marsupial saber-tooth from the Pliocene of Argentina and its relationships to other South American predacious marsupials
• Structure and relationships of opisthocœlian dinosaurs