The beginning of the age of mammals in South America. Part 1, Introduction : Systematics : Marsupialia, Edentata, Condylarthra, Litopterna and Notioprogonia. Bulletin of the AMNH ; v. 91, article 1

Simpson, George Gaylord, 1902-2005-10-062005-10-061948http://hdl.handle.net/2246/1632232 p., 19 p. of plates : ill., map ; 27 cm.Includes bibliographical references (p. 223-226) and index.57387547 bytesapplication/pdfen-USQH1 .A4 vol.91, art.1, 1948Mammals, Fossil -- Patagonia (Argentina and Chile)Mammals, Fossil -- Argentina -- Chubut.Paleontology -- Tertiary -- Patagonia (Argentina and Chile)Paleontology -- Tertiary -- Argentina -- Chubut.Paleontology -- Patagonia (Argentina and Chile)Paleontology -- Argentina -- Chubut.Paleontology -- Patagonia (Argentina and Chile) -- History.Ameghino, Florentino, -- 1853-1911.Ameghino, Carlos.The beginning of the age of mammals in South America. Part 1, Introduction : Systematics : Marsupialia, Edentata, Condylarthra, Litopterna and Notioprogonia. Bulletin of the AMNH ; v. 91, article 1Marsupialia, Edentata, Condylarthra, Litopterna and NotioprogoniaAge of mammals in South Americatext