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  1. By: Granger, Walter, - Matthew, William Diller, - Simpson, George Gaylord,
    Publication info: 1929
    Holding Institution: American Museum of Natural History Library
  2. By: Simpson, George Gaylord,
    Publication info: 1930
    Holding Institution: American Museum of Natural History Library
  3. By: Simpson, George Gaylord,
    Publication info: 1936
    Holding Institution: American Museum of Natural History Library
  4. By: Silberling, Albert C. - Simpson, George Gaylord,
    Publication info: 1937
    Holding Institution: American Museum of Natural History Library
  5. By: Simpson, George Gaylord,
    Publication info: 1941
    Holding Institution: American Museum of Natural History Library
  6. By: Central Asiatic Expeditions (1921-1930) - Simpson, George Gaylord,
    Publication info: 1928
    Holding Institution: American Museum of Natural History Library
  7. By: Simpson, George Gaylord,
    Publication info: 1928
    Holding Institution: American Museum of Natural History Library
  8. By: Simpson, George Gaylord,
    Publication info: 1930
    Holding Institution: American Museum of Natural History Library
  9. By: Simpson, George Gaylord,
    Publication info: 1951
    Holding Institution: American Museum of Natural History Library
  10. By: Simpson, George Gaylord,
    Publication info: 1928
    Holding Institution: American Museum of Natural History Library
  11. By: Simpson, George Gaylord,
    Publication info: New Haven,Yale university press;1929.
    Holding Institution: MBLWHOI Library
  12. By: Scarritt Patagonian Expedition 1930-1931) - Simpson, George Gaylord,
    Publication info: 1937
    Holding Institution: American Museum of Natural History Library
  13. By: Scarritt Patagonian Expedition 1930-1931) - Scarritt Patagonian Expedition (1933-1934) - Schaeffer, Bobb, - Simpson, George Gaylord,
    Publication info: 1949
    Holding Institution: American Museum of Natural History Library
  14. By: Simpson, George Gaylord,
    Publication info: 1954
    Holding Institution: American Museum of Natural History Library
  15. By: Ameghino, Florentino, - McCartney, George Chester. - Scarritt Patagonian Expedition 1930-1931) - Simpson, George Gaylord,
    Publication info: 1934
    Holding Institution: American Museum of Natural History Library
  16. By: Simpson, George Gaylord,
    Publication info: 1948
    Holding Institution: American Museum of Natural History Library
  17. By: Simpson, George Gaylord,
    Publication info: 1967
    Holding Institution: American Museum of Natural History Library
  18. By: McCartney, George Chester. - Scarritt Patagonian Expedition 1930-1931) - Simpson, George Gaylord,
    Publication info: 1933
    Holding Institution: American Museum of Natural History Library
  19. By: Cifelli, Richard - Scarritt Patagonian Expedition 1930-1931) - Simpson, George Gaylord,
    Publication info: 1985
    Holding Institution: American Museum of Natural History Library
  20. By: Scarritt Patagonian Expedition 1930-1931) - Simpson, George Gaylord,
    Publication info: 1933
    Holding Institution: American Museum of Natural History Library
  21. By: Brown, Barnum, - Scarritt Patagonian Expedition 1930-1931) - Simpson, George Gaylord,
    Publication info: 1933
    Holding Institution: American Museum of Natural History Library
  22. By: British Museum (Natural History). Department of Geology. - Simpson, George Gaylord,
    Publication info: London :BM(NH),1928.
    Holding Institution: Natural History Museum Library, London
    BHL Collections: Natural History Museum (London) Publications
  23. By: Simpson, George Gaylord,
    Publication info: 1936
    Holding Institution: American Museum of Natural History Library
  24. By: Scarritt Patagonian Expedition 1930-1931) - Simpson, George Gaylord,
    Publication info: 1932
    Holding Institution: American Museum of Natural History Library
  25. By: Ameghino, Florentino, - Simpson, George Gaylord,
    Publication info: 1972
    Holding Institution: American Museum of Natural History Library
  26. By: Central Asiatic Expeditions (1921-1930) - Gregory, William K. (William King), - Simpson, George Gaylord,
    Publication info: 1926
    Holding Institution: American Museum of Natural History Library
  27. By: Scarritt Patagonian Expedition 1930-1931) - Simpson, George Gaylord, - Williams, Coleman S.
    Publication info: 1938
    Holding Institution: American Museum of Natural History Library
  28. By: Couto, Carlos de Paula. - Matthew, William Diller, - Simpson, George Gaylord,
    Publication info: 1959
    Holding Institution: American Museum of Natural History Library
  29. By: Simpson, George Gaylord,
    Publication info: 1929
    Holding Institution: American Museum of Natural History Library
  30. By: Scarritt Patagonian Expedition 1930-1931) - Scarritt Patagonian Expedition (1933-1934) - Simpson, George Gaylord,
    Publication info: 1935
    Holding Institution: American Museum of Natural History Library
  31. By: Chaffee, Robert Gibson, - Scarritt Patagonian Expedition (1933-1934) - Simpson, George Gaylord,
    Publication info: 1952
    Holding Institution: American Museum of Natural History Library
  32. By: Simpson, George Gaylord,
    Publication info: 1941
    Holding Institution: American Museum of Natural History Library
  33. By: Scarritt Patagonian Expedition 1930-1931) - Scarritt Patagonian Expedition (1933-1934) - Simpson, George Gaylord,
    Publication info: 1935
    Holding Institution: American Museum of Natural History Library
  34. By: Scarritt Patagonian Expedition 1930-1931) - Simpson, George Gaylord,
    Publication info: 1932
    Holding Institution: American Museum of Natural History Library
  35. By: Scarritt Patagonian Expedition 1930-1931) - Schaeffer, Bobb, - Simpson, George Gaylord,
    Publication info: 1947
    Holding Institution: American Museum of Natural History Library
  36. By: Simpson, George Gaylord,
    Publication info: 1941
    Holding Institution: American Museum of Natural History Library
  37. By: Simpson, George Gaylord, - Van Frank, Richard
    Publication info: 1957
    Holding Institution: American Museum of Natural History Library
  38. By: Simpson, George Gaylord, - Whitaker, George O.
    Publication info: 1949
    Holding Institution: American Museum of Natural History Library
  39. By: Cope, E. D. (Edward Drinker), - Simpson, George Gaylord,
    Publication info: 1959
    Holding Institution: American Museum of Natural History Library
  40. By: Scarritt Patagonian Expedition (1933-1934) - Simpson, George Gaylord,
    Publication info: 1946
    Holding Institution: American Museum of Natural History Library
  41. By: Simpson, George Gaylord,
    Publication info: 1932
    Holding Institution: American Museum of Natural History Library
  42. By: Simpson, George Gaylord,
    Publication info: 1941
    Holding Institution: American Museum of Natural History Library
  43. By: Central Asiatic Expeditions (1921-1930) - Simpson, George Gaylord,
    Publication info: 1928
    Holding Institution: American Museum of Natural History Library
  44. By: Berman, Jack E. - Hecht, Max K., - Hummel, John M. - McGrew, Paul Orman, - Simpson, George Gaylord, - Wood, Albert Elmer,
    Publication info: 1959
    Holding Institution: American Museum of Natural History Library
  45. By: Bird, Junius Bouton, - Briggs, Kenneth. - Granger, Walter, - Simpson, George Gaylord, - Thomson, Albert
    Publication info: 1941
    Holding Institution: American Museum of Natural History Library
  46. By: Simpson, George Gaylord,
    Publication info: 1933
    Holding Institution: American Museum of Natural History Library
  47. By: Elftman, Herbert Oliver, - Simpson, George Gaylord,
    Publication info: 1928
    Holding Institution: American Museum of Natural History Library
  48. By: Simpson, George Gaylord,
    Publication info: 1930
    Holding Institution: American Museum of Natural History Library
  49. By: Simpson, George Gaylord,
    Publication info: 1941
    Holding Institution: American Museum of Natural History Library
  50. By: Brown, Barnum, - Simpson, George Gaylord,
    Publication info: 1927
    Holding Institution: American Museum of Natural History Library
  51. By: Brown, Barnum, - Simpson, George Gaylord,
    Publication info: 1927
    Holding Institution: American Museum of Natural History Library
  52. By: Couto, Carlos de Paula. - Simpson, George Gaylord,
    Publication info: 1957
    Holding Institution: American Museum of Natural History Library
  53. By: Central Asiatic Expeditions (1921-1930) - Simpson, George Gaylord,
    Publication info: 1925
    Holding Institution: American Museum of Natural History Library
  54. By: Granger, Walter, - Simpson, George Gaylord, - Wortman, J. L. (Jacob Lawson),
    Publication info: 1931
    Holding Institution: American Museum of Natural History Library
  55. By: Simpson, George Gaylord,
    Publication info: 1947
    Holding Institution: American Museum of Natural History Library
  56. By: Bird, Junius Bouton, - Simpson, George Gaylord,
    Publication info: 1941
    Holding Institution: American Museum of Natural History Library
  57. By: Scarritt Patagonian Expedition (1933-1934) - Simpson, George Gaylord,
    Publication info: 1942
    Holding Institution: American Museum of Natural History Library
  58. By: Simpson, George Gaylord,
    Publication info: 1938
    Holding Institution: American Museum of Natural History Library
  59. By: Scarritt Patagonian Expedition 1930-1931) - Simpson, George Gaylord,
    Publication info: 1932
    Holding Institution: American Museum of Natural History Library
  60. By: Granger, Walter, - Simpson, George Gaylord,
    Publication info: 1941
    Holding Institution: American Museum of Natural History Library
  61. By: Simpson, George Gaylord,
    Publication info: 1932
    Holding Institution: American Museum of Natural History Library
  62. By: Granger, Walter, - Simpson, George Gaylord,
    Publication info: 1928
    Holding Institution: American Museum of Natural History Library
  63. By: Hunter, Fenley. - Silberling, Albert C. - Simpson, George Gaylord,
    Publication info: 1933
    Holding Institution: American Museum of Natural History Library
  64. By: Minoprio, José Luis. - Simpson, George Gaylord,
    Publication info: 1949
    Holding Institution: American Museum of Natural History Library
  65. By: Simpson, George Gaylord,
    Publication info: 1931
    Holding Institution: American Museum of Natural History Library
  66. By: Scarritt Patagonian Expedition 1930-1931) - Simpson, George Gaylord,
    Publication info: 1933
    Holding Institution: American Museum of Natural History Library
  67. By: Couto, Carlos de Paula. - Price, Llewellyn Ivor. - Simpson, George Gaylord,
    Publication info: 1947
    Holding Institution: American Museum of Natural History Library
  68. By: Granger, Walter, - Scarritt Expedition (1935) - Scarritt, Horace S., - Silberling, Albert C. - Simpson, George Gaylord, - Thomson, Albert
    Publication info: 1936
    Holding Institution: American Museum of Natural History Library
  69. By: Scarritt Patagonian Expedition 1930-1931) - Simpson, George Gaylord,
    Publication info: 1933
    Holding Institution: American Museum of Natural History Library
  70. By: McKenna, Malcolm C. - Simpson, George Gaylord,
    Publication info: 1959
    Holding Institution: American Museum of Natural History Library
  71. By: Central Asiatic Expeditions (1921-1930) - Simpson, George Gaylord,
    Publication info: 1931
    Holding Institution: American Museum of Natural History Library
  72. By: Simpson, George Gaylord, - Vertebrate Paleontology Expedition (1897)
    Publication info: 1937
    Holding Institution: American Museum of Natural History Library
  73. By: Matthew, William Diller, - Simpson, George Gaylord,
    Publication info: 1924
    Holding Institution: American Museum of Natural History Library
  74. By: Brown, Barnum, - Siegfriedt, J. C. F. - Simpson, George Gaylord,
    Publication info: 1928
    Holding Institution: American Museum of Natural History Library
  75. By: Scarritt Patagonian Expedition 1930-1931) - Simpson, George Gaylord,
    Publication info: 1938
    Holding Institution: American Museum of Natural History Library
  76. By: McKenna, Malcolm C. - Simpson, George Gaylord,
    Publication info: 1959
    Holding Institution: American Museum of Natural History Library
  77. By: Scarritt Patagonian Expedition (1933-1934) - Simpson, George Gaylord,
    Publication info: 1934
    Holding Institution: American Museum of Natural History Library
  78. By: Simpson, George Gaylord, - Thompson, Raymond.
    Publication info: 1941
    Holding Institution: American Museum of Natural History Library
  79. By: Scarritt Patagonian Expedition 1930-1931) - Simpson, George Gaylord,
    Publication info: 1932
    Holding Institution: American Museum of Natural History Library
  80. By: Simpson, George Gaylord,
    Publication info: 1929
    Holding Institution: American Museum of Natural History Library
  81. By: Scarritt Patagonian Expedition 1930-1931) - Scarritt Patagonian Expedition (1933-1934) - Simpson, George Gaylord,
    Publication info: 1937
    Holding Institution: American Museum of Natural History Library
  82. By: Howard, Hildegarde - Scarritt Patagonian Expedition 1930-1931) - Simpson, George Gaylord,
    Publication info: 1955
    Holding Institution: American Museum of Natural History Library
  83. By: Hecht, Max K., - McGrew, Paul Orman, - Simpson, George Gaylord,
    Publication info: 1956
    Holding Institution: American Museum of Natural History Library
  84. By: Simpson, George Gaylord,
    Publication info: 1974
    Holding Institution: American Museum of Natural History Library
  85. By: Simpson, George Gaylord,
    Publication info: 1945
    Holding Institution: American Museum of Natural History Library
  86. By: Granger, Walter, - Simpson, George Gaylord,
    Publication info: 1937
    Holding Institution: American Museum of Natural History Library
  87. By: Scarritt Patagonian Expedition 1930-1931) - Scarritt Patagonian Expedition (1933-1934) - Simpson, George Gaylord,
    Publication info: 1935
    Holding Institution: American Museum of Natural History Library
  88. By: Simpson, George Gaylord,
    Publication info: 1938
    Holding Institution: American Museum of Natural History Library
  89. By: Simpson, George Gaylord,
    Publication info: 1946
    Holding Institution: American Museum of Natural History Library
  90. By: Simpson, George Gaylord,
    Publication info: 1929
    Holding Institution: American Museum of Natural History Library
  91. By: Granger, Walter, - Matthew, William Diller, - Simpson, George Gaylord,
    Publication info: 1928
    Holding Institution: American Museum of Natural History Library
  92. By: Simpson, George Gaylord,
    Publication info: 1955
    Holding Institution: American Museum of Natural History Library
  93. By: Holmes, Walter W. - Simpson, George Gaylord,
    Publication info: 1931
    Holding Institution: American Museum of Natural History Library
  94. By: Holmes, Walter W. - Simpson, George Gaylord,
    Publication info: 1929
    Holding Institution: American Museum of Natural History Library
  95. By: Simpson, George Gaylord,
    Publication info: 1928
    Holding Institution: American Museum of Natural History Library
  96. By: Simpson, George Gaylord,
    Publication info: 1945
    Holding Institution: American Museum of Natural History Library
  97. By: Axelrod, Daniel I. - Bucher, Walter H. (Walter Herman), - Camp, W. H. (Wendell Holmes), - Caster, Kenneth E. - Colbert, Edwin H. - Darlington, Philip Jackson, - Dunbar, Carl O.‏ ‎ (Carl Owen),‏ ‎ - Dunkle, David Hosbrook. - Emerson, Alfred Edwards, - Ewing, W. Maurice (William Maurice), - Just, Theodor. - Kay, Marshall, - Mayr, Ernst, - Romer, Alfred Sherwood, - Schaeffer, Bobb, - Simpson, George Gaylord, - Society for the Study of Evolution. Meeting (1949 : New York, N.Y.)
    Publication info: 1952
    Holding Institution: American Museum of Natural History Library
  98. By: Scarritt Patagonian Expedition 1930-1931) - Scarritt Patagonian Expedition (1933-1934) - Simpson, George Gaylord,
    Publication info: 1934
    Holding Institution: American Museum of Natural History Library
  99. By: Simpson, George Gaylord,
    Publication info: 1971
    Holding Institution: American Museum of Natural History Library
  100. By: Granger, Walter, - Simpson, George Gaylord,
    Publication info: 1929
    Holding Institution: American Museum of Natural History Library
  101. By: Colbert, Edwin H. - Scarritt Patagonian Expedition 1930-1931) - Simpson, George Gaylord, - Williams, Coleman S.
    Publication info: 1946
    Holding Institution: American Museum of Natural History Library
  102. By: Simpson, George Gaylord,
    Publication info: 1933
    Holding Institution: American Museum of Natural History Library
  103. By: Scarritt Patagonian Expedition 1930-1931) - Simpson, George Gaylord,
    Publication info: 1936
    Holding Institution: American Museum of Natural History Library
  104. By: Simpson, George Gaylord,
    Publication info: 1937
    Holding Institution: American Museum of Natural History Library
  105. By: Scarritt Patagonian Expedition 1930-1931) - Simpson, George Gaylord,
    Publication info: 1932
    Holding Institution: American Museum of Natural History Library
  106. By: Simpson, George Gaylord,
    Publication info: 1941
    Holding Institution: American Museum of Natural History Library
  107. By: Scarritt Patagonian Expedition 1930-1931) - Simpson, George Gaylord,
    Publication info: 1932
    Holding Institution: American Museum of Natural History Library
  108. By: Simpson, George Gaylord, - Thomson, Albert
    Publication info: 1941
    Holding Institution: American Museum of Natural History Library
  109. By: Simpson, George Gaylord,
    Publication info: 1936
    Holding Institution: American Museum of Natural History Library
  110. By: Roe, Anne, - Simpson, George Gaylord,
    Publication info: 1942
    Holding Institution: American Museum of Natural History Library
  111. By: Scarritt Patagonian Expedition 1930-1931) - Simpson, George Gaylord,
    Publication info: 1933
    Holding Institution: American Museum of Natural History Library
  112. By: Scarritt Patagonian Expedition 1930-1931) - Simpson, George Gaylord,
    Publication info: 1933
    Holding Institution: American Museum of Natural History Library
  113. By: Scarritt Patagonian Expedition 1930-1931) - Simpson, George Gaylord,
    Publication info: 1936
    Holding Institution: American Museum of Natural History Library
  114. By: Simpson, George Gaylord,
    Publication info: 1940
    Holding Institution: American Museum of Natural History Library
  115. By: Scarritt Patagonian Expedition 1930-1931) - Simpson, George Gaylord,
    Publication info: 1932
    Holding Institution: American Museum of Natural History Library
  116. By: Scarritt Patagonian Expedition 1930-1931) - Simpson, George Gaylord,
    Publication info: 1932
    Holding Institution: American Museum of Natural History Library
  117. By: Simpson, George Gaylord,
    Publication info: 1930
    Holding Institution: American Museum of Natural History Library
  118. By: Husband, Rachel A. - Lobdell, J. F. - Simpson, George Gaylord,
    Publication info: 1929
    Holding Institution: American Museum of Natural History Library
  119. By: Granger, Walter, - Olsen, George, - Simpson, George Gaylord,
    Publication info: 1935
    Holding Institution: American Museum of Natural History Library
  120. By: Granger, Walter, - Simpson, George Gaylord,
    Publication info: 1935
    Holding Institution: American Museum of Natural History Library
  121. By: Granger, Walter, - Simpson, George Gaylord,
    Publication info: 1935
    Holding Institution: American Museum of Natural History Library
  122. By: McKenna, Malcolm C. - Simpson, George Gaylord,
    Publication info: 1959
    Holding Institution: American Museum of Natural History Library
  123. By: Simpson, George Gaylord,
    Publication info: 1956
    Holding Institution: American Museum of Natural History Library
  1. By: Simpson, George Gaylord,
    Type: Article
    In: Records of the South Australian Museum
    Volume: 13
    Date: 1957
    Page Range: 51--70
    Publication Info: Adelaide :Published under the authority of the board of governors and edited by the museum director,1918-2003.
  2. By: Simpson, George Gaylord,
    Type: Article
    In: Annals of the Carnegie Museum.
    Volume: 19
    Date: 1929
    Page Range: 115--122
    Publication Info: [Pittsburgh] :Published by authority of the Board of Trustees of the Carnegie Institute,1901-
  3. By: Simpson, George Gaylord,
    Type: Article
    In: Postilla.
    Volume: 115
    Date: 1968
    Page Range: 1--3
    Publication Info: New Haven,Peabody Museum of Natural History,1950-2004.
  4. By: Simpson, George Gaylord,
    Type: Article
    In: Contributions in science
    Volume: 330
    Date: 1980-09-15
    Page Range: 3-8
    Publication Info: Los Angeles, Calif :The Museum,[1957]-
  5. By: Simpson, George Gaylord,
    Type: Article
    In: Journal of the Washington Academy of Sciences.
    Volume: 30
    Date: 1940
    Page Range: 137--163
    Publication Info: Washington [etc.,Washington Academy of Sciences]
  6. By: Simpson, George Gaylord,
    Type: Article
    In: Memoirs of the National Museum of Victoria
    Volume: 31
    Date: 1970
    Page Range: 17--23
    Publication Info: Melbourne :National Museum of Victoria,1946-1984.
  7. By: Simpson, George Gaylord,
    Type: Article
    In: Proceedings of the Royal Society of Victoria. New series.
    Volume: 71
    Issue: 2
    Date: 1959
    Page Range: 113--119
    Publication Info: Melbourne :Stillwell and Co.,1889.
  8. By: Simpson, George Gaylord,
    Type: Article
    In: Proceedings of the United States National Museum
    Volume: 83
    Issue: 2981
    Date: 1935
    Page Range: 221--244
    Publication Info: Washington :Smithsonian Institution Press, [etc.]
  9. By: Simpson, George Gaylord,
    Type: Article
    In: Proceedings of the Royal Society of Victoria. New series.
    Volume: 79
    Issue: 1
    Date: 1965
    Page Range: 91--93
    Publication Info: Melbourne :Stillwell and Co.,1889.
  10. By: Simpson, George Gaylord,
    Type: Article
    In: Proceedings of the Royal Society of Victoria. New series.
    Volume: 82
    Issue: 2
    Date: 1969
    Page Range: 149--160
    Publication Info: Melbourne :Stillwell and Co.,1889.
  11. By: Simpson, George Gaylord,
    Type: Article
    In: Journal of the Washington Academy of Sciences.
    Volume: 31
    Date: 1941
    Page Range: 1--20
    Publication Info: Washington [etc.,Washington Academy of Sciences]