Avian fossils from the Miocene and Pliocene of Nebraska. Bulletin of the AMNH ; v. 48, article 12.

Wetmore, Alexander, 1886-2005-10-062005-10-061923http://hdl.handle.net/2246/1305p. 483-507 : ill. ; 24 cm.Includes bibliographical references.2796197 bytesapplication/pdfen-USQH1 .A4 vol.48, art.12, 1923Birds, Fossil -- Nebraska -- Sioux County.Paleontology -- Neogene -- Nebraska -- Sioux County.Paleontology -- Nebraska -- Sioux County.Avian fossils from the Miocene and Pliocene of Nebraska. Bulletin of the AMNH ; v. 48, article 12.text