Simpson, George Gaylord, 1902-Scarritt Patagonian Expedition 1933-1934)2005-10-052005-10-051946http://hdl.handle.net/2246/39299 p. : ill., map ; 27 cm.Includes bibliographical references (p. 97-99).20584725 bytesapplication/pdfen-USQH1 .A4 vol.87, art.1, 1946Penguins, Fossil.Paleontology -- Tertiary.Penguins -- Evolution.Paraptenodytes antarcticus.Penguins, Fossil -- Argentina -- Chubut.Birds, Fossil -- Argentina -- Chubut.Paleontology -- Miocene -- Argentina -- Chubut.Paleontology -- Argentina -- Chubut.text