PALEOBIOGEOGRAPHY OF THE MARINE REALM 199 



Plass, G. N. 1956. Carbon dioxide and the climate. Am. Scientist, 44, 



302-316. 

 Regnard, Paul. 1891. Recherches Experimentales siir les Conditions 



Physiques de la Vie dans les Eaux. G. Masson, Paris, France. 

 Raid, E. M., and M. E. J. Chandler. 1933. The London Clay Flora. 



British Museum (Nat. History), London, England. 

 Rubey, W. W. 1951. Geological history of sea water. Bull. Geol. Sac. 



Am., 62, 1111-1147. 

 Rukhin, L. B. 1957. Paleoclimatology and biostratigraphy (in Russian). 



All-State Paleontol. Soc. Trans., 1st Session, 1955, Problems of 



paleobiogeography and biostratigraphy, pp. 25-41. 

 Runcorn, S. K. 1959. Rock magnetism. Science, 129, 1002-1011. 

 Sahni, Birbal. 1938. Recent advances in Indian paleobotany. Lucknow 



Univ. Studies, Fac. Sci., No. 2. 

 Schmarda, Ludwig K., 1853. Die geographische Verbreitung der Thiere. 



C. Ceroid & Son, Vienna, Austria. 

 Schmidt, K. P. 1955. Animal geography. In A Century of Progress in the 



Natural Sciences, 1853-1953, pp. 767-794. Academy of Sciences, 



San Francisco, Calif. 

 Schuchert, Charles. 1955. Atlas of Paleogeographic Maps of North 



America. John Wiley & Sons, New York, N.Y. 

 Schwarzbach, Martin. 1950. Das Klima der Vorzeit, Eine Einfilhrung in 



die Paldoklimatologie. F. Enke, Stuttgart, Germany. 

 Seilacher, Adolf. 1954. Die geologische Bedeutung fossiler Lebensspiiren. 



Z. deut. geol. Ges., 105, lU-lll . 

 Shapley, Harlow, Editor. 1953. Climatic Change. Harvard University 



Press, Cambridge, Mass. 

 Simpson, G. G. 1940a. Mammals and land bridges. J. Wash. Acad. Sci., 



30, 137-163. 

 . 1940b. Antarctica as a faunal migration route. Proc. 6th Pacific 



Sci. Congr., California, 1939, 2, 755-768. 

 . 1952. Probabilities of dispersal in geologic time. Bull. Am. 



Museum Nat. Hist., 99, 163-176. 



1953. Evolution and Geography. Oregon State System of Higher 



Education, Condon Lectures. 

 Smith, J. P. 1910. Ancient climates of the West Coast. Pop. Sci. Monthly, 



76, 478-486. 

 Stepanov, D. L., Editor. 1957. Problems of paleobiogeography and 



biostratigraphy (in Russian). All-State Paleontol. Soc. Trans., 1st 



Session, 1955. 

 Steuer, A. 1933. Zur planmassigen Erforschung der geographischen 



Verbreitung des Hal. planktons, besonders der Copepoden. Zoogeo- 



graphica, 1, 269-302. 



