Browsing by Author "Simpson, George Gaylord, 1902-"
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Item Additions to the fauna of the Gashato Formation of Mongolia. American Museum novitates ; no. 376(New York City : American Museum of Natural History, 1929) Matthew, William Diller, 1871-1930.; Granger, Walter, 1872-1941.; Simpson, George Gaylord, 1902-Item Additions to the Pleistocene of Florida. American Museum novitates ; no. 406(New York City : American Museum of Natural History, 1930) Simpson, George Gaylord, 1902-Item Additions to the Puerco fauna, Lower Paleocene. American Museum novitates ; no. 849(New York City : The American Museum of Natural History, 1936) Simpson, George Gaylord, 1902-Item Additions to the Upper Paleocene fauna of the Crazy Mountain field. American Museum novitates ; no. 940(New York City : The American Museum of Natural History, 1937) Simpson, George Gaylord, 1902-; Silberling, Albert C.Item The affinities of the Borhyaenidae. American Museum novitates ; no. 1118(New York City : The American Museum of Natural History, 1941) Simpson, George Gaylord, 1902-Item Affinities of the Mongolian Cretaceous insectivores. American Museum novitates ; no. 330(New York City : American Museum of Natural History, 1928) Simpson, George Gaylord, 1902-; Central Asiatic Expeditions (1921-1930)Item Affinities of the Polydolopidae. American Museum novitates ; no. 323(New York City : American Museum of Natural History, 1928) Simpson, George Gaylord, 1902-Item Allognathosuchus mooki, a new crocodile from the Puerco Formation. American Museum novitates ; no. 445(New York City : American Museum of Natural History, 1930) Simpson, George Gaylord, 1902-Item American Cretaceous insectivores. American Museum novitates ; no. 1541(New York : American Museum of Natural History, 1951) Simpson, George Gaylord, 1902-Item American Eocene didelphids. American Museum novitates ; no. 307(New York City : American Museum of Natural History, 1928) Simpson, George Gaylord, 1902-Item An ancient eusuchian crocodile from Patagonia. American Museum novitates ; no. 965(New York City : The American Museum of Natural History, 1937) Simpson, George Gaylord, 1902-; Scarritt Patagonian Expedition 1930-1931)Item Anurans from the early Tertiary of Patagonia. Bulletin of the AMNH ; v. 93, article 2(New York : [American Museum of Natural History], 1949) Schaeffer, Bobb, 1913-; Simpson, George Gaylord, 1902-; Scarritt Patagonian Expedition 1930-1931); Scarritt Patagonian Expedition 1933-1934)Item An apatemyid from the early Eocene of New Mexico. American Museum novitates ; no. 1654(New York : American Museum of Natural History, 1954) Simpson, George Gaylord, 1902-Item The "Argiles fissilaires," a series of opal-bearing rocks of Patagonia. American Museum novitates ; no.687(New York City : The American Museum of Natural History, 1934) McCartney, George Chester.; Simpson, George Gaylord, 1902-; Ameghino, Florentino, 1853-1911.; Scarritt Patagonian Expedition 1930-1931)Item 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(New York : [American Museum of Natural History], 1948) Simpson, George Gaylord, 1902-Item The beginning of the age of mammals in South America. Part 2, Systematics : Notoungulata, concluded (Typotheria, Hegetotheria, Toxodonta, Notoungulata incertae sedis), Astrapotheria, Trigonostylopoidea, Pyrotheria, Xenungulata, Mammalia incertae sedis. Bulletin of the AMNH ; v. 137(New York : [American Museum of Natural History], 1967) Simpson, George Gaylord, 1902-Item The bentonites and closely related rocks of Patagonia. American Museum novitates ; no.630(New York City : The American Museum of Natural History, 1933) McCartney, George Chester.; Simpson, George Gaylord, 1902-; Scarritt Patagonian Expedition 1930-1931)Item Biostratigraphy of the Casamayoran, Early Eocene of Patagonia. American Museum novitates ; no. 2820(New York, N.Y. : American Museum of Natural History, 1985) Cifelli, Richard.; Simpson, George Gaylord, 1902-; Scarritt Patagonian Expedition 1930-1931)"The Casamayoran, presumed to pertain to the early Eocene, is the most diverse and best known of South America's early to middle Tertiary land mammal ages. Because the composition of local faunas and the stratigraphic position of assemblages at any given locality have not been evaluated, however, the Casamyoran has remained a dimensionless age, despite its seminal importance to understanding the early radiations of mammals on the South American continent. Preliminary analysis of field data and collections obtained by G.G. Simpson in 1930-1931 suggests a faunal succession in the Casamayoran of Patagonia. Large, well documented samples are available from two localities with relatively wide stratigraphic distributions of Casamayoran mammals: Cañadón Vaca and the Gran Barranca south of Lago Colhué Huapí, central Chubut. The compositions of these two local faunas differ markedly, and lithostratigraphic, biostratigraphic, and paleontologic evidence suggests that these differences are temporal and not ecological in nature. Faunal composition of the two localities is compared qualitatively and statistically with respect to the magnitude of difference seen in preceding and succeeding South American land mammal ages and to roughly equivalent North American land mammal ages. Two new subdivisions of the Casamayoran, the Barrancan and the Vacan, are defined on this basis. In addition, a composite stratigraphic plot of taxa from the younger of the two localities (the Gran Barranca) produced a number of non-overlapping range zones within the Barrancan; statistical analysis indicates that the probability these observations are due to sampling error is small in most, but not all, cases. The other Patagonian local faunas are briefly considered with respect to this scheme, and an hypothesis of their relative ages is presented"--P. [1].Item Braincasts of Phenacodus, Notostylops, and Rhyphodon. American Museum novitates ; no.622(New York City : The American Museum of Natural History, 1933) Simpson, George Gaylord, 1902-; Scarritt Patagonian Expedition 1930-1931)Item Braincasts of two typotheres and a litoptern. American Museum novitates ; no.629(New York City : The American Museum of Natural History, 1933) Simpson, George Gaylord, 1902-; Brown, Barnum.; Scarritt Patagonian Expedition 1930-1931)