Portal:Paleontology in the United States

Arkansas

 * "North American Plesiosaurs: Elasmosaurus, Cimoliasaurus, and Polycotylus" (1906) by Samuel Wendell Williston in American Journal of Science XXI.

Colorado

 * "New Order of Extinct Reptilia (Stegosauria) from the Jurassic of the Rocky Mountains" (1877) by O. C. Marsh.
 * "Notice of new Dinosaurian Reptiles from the Jurassic formation" (1877) by O. C. Marsh.
 * "Notice of new Dinosaurian Reptiles from the Jurassic formation" (1877) by O. C. Marsh.

Illinois

 * Pennsylvanian invertebrates of the Mazon Creek Area, Illinois: Eurypterida, 1963 by Erik Norman Kjellesvig-Waering.

Kansas

 * "On some reptilian remains" by Edward Drinker Cope in the American Journal of Science 1869
 * "North American Plesiosaurs: Elasmosaurus, Cimoliasaurus, and Polycotylus" (1906) by Samuel Wendell Williston in American Journal of Science XXI.

Michigan

 * "Notice of the Remains of a Mastodon recently discovered in Michigan" (1864) by Alexander Winchell.
 * "Two Undescribed Specimens of Castoroides ohioensis Foster from Michigan" (1914) by Norman Asa Wood
 * "On a Nearly Complete Skull of Symbos cavifrons Leidy from Michigan" (1915) by Ermine Cowles Case
 * "Descriptions of Some New Species of Devonian Fossils" (1918) by Clinton R. Stauffer

Montana

 * "Tyrannosaurus and Other Cretaceous Carnivorous Dinosaurs" (1905) by Henry Fairfield Osborn.
 * "North American Plesiosaurs: Elasmosaurus, Cimoliasaurus, and Polycotylus" (1906) by Samuel Wendell Williston in American Journal of Science XXI.

Nebraska

 * "North American Plesiosaurs: Elasmosaurus, Cimoliasaurus, and Polycotylus" (1906) by Samuel Wendell Williston in American Journal of Science XXI.
 * Carboniferous Eurypterids of Nebraska, 1914 by Erwin Hinckly Barbour

New Jersey

 * On some reptilian remains by Edward Drinker Cope in the American Journal of Science 1869
 * "North American Plesiosaurs: Elasmosaurus, Cimoliasaurus, and Polycotylus" (1906) by Samuel Wendell Williston in American Journal of Science XXI.
 * "North American Plesiosaurs: Elasmosaurus, Cimoliasaurus, and Polycotylus" (1906) by Samuel Wendell Williston in American Journal of Science XXI.

New York

 * "Description of a New Species of Trilobite", 1875 by Charles Doolittle Walcott.
 * "Notes on Ceraurus pleurexanthemus, Green", 1875 by Charles Doolittle Walcott.
 * "New Species of Trilobite from the Trenton Limestone at Trenton Falls, N. Y.", 1875 by Charles Doolittle Walcott.
 * Notice of the discovery of a Poecilopod in the Utica slate formation, 1882 by Charles Doolittle Walcott.
 * Description of a New Genus of the Order Eurypterida from the Utica Slate, 1882 by Charles Doolittle Walcott
 * The Eurypterida of New York, 1912 by John Mason Clarke and Rudolf Ruedemann.

Ohio

 * Eurypterids of the Devonian Holland Quarry Shale of Ohio, 1961 by Erik Norman Kjellesvig-Waering

Wyoming

 * "Principal Characters of American Jurassic Dinosaurs; Part VI, Restoration of Brontosaurus" (1878) by O. C. Marsh.
 * "Notice of Gigantic Horned Dinosauria from the Cretaceous" (1889) by O. C. Marsh.
 * "North American Plesiosaurs: Elasmosaurus, Cimoliasaurus, and Polycotylus" (1906) by Samuel Wendell Williston in American Journal of Science XXI.
 * "Notes on Osteology of Baptanodon. With a Description of a New Species" (1906) by Charles Whitney Gilmore in Memoirs of the Carnegie Museum
 * "Notes on Osteology of Baptanodon. With a Description of a New Species" (1906) by Charles Whitney Gilmore in Memoirs of the Carnegie Museum