196 PROCEEDINGS OF THE PALEONTOLOGICAL SOCIETY 



the Secretary was instructed to cast the ballot of the Society for the 

 election to membership in the Society of the following three nominees: 



Henry M. Du Bois, A. B. (1913), A. M. (1914) Indiana University. Assistant 

 in Paleontology, University of Illinois, Urbana, Illinois. Engaged in 

 ecological and stratigraphic paleontology. Proposed by T. E. Savage and 

 E. R, Cumings. 



John B. Reeside, Jr., A. B. (1911), Ph. D. (1915) Johns Hopkins University. 

 Assistant Geologist, United States Geological Survey. Engaged in study 

 of Cretaceous invertebrates and stratigraphy. Proposed by T. W. Stanton 

 and R. S. Bassler. 



Clifton J. Sarle, B. S. (1902), M. S. (1903) University of Rochester, Ph. D. 

 (1906) Yale University. Professor of Geology, University of Arizona, 

 Tucson, Arizona. Engaged in study of Paleozoic invertebrates, especially 

 problematic forms. Proposed by George H. Chadwick and R. S. Bassler. 



PRESENTATION OF GENERAL PAPERS ON VERTEBRATE PALEONTOLOGY 



Doctor Matthew then took the chair and the reading of papers on 

 vertebrate paleontology of a general nature was commenced. The first 

 paper, which was a very important and interesting one, dealing with the 

 stratigraphy and vertebrate paleontology of the Pliocene, was illustrated 

 by lantern slides, showing the correlation and lists of the mammalian 

 faunas of the varions formations. 



PLIOCENE MAMMALIAN FAUNAS OF NORTH AMERICA 

 BY JOHN C. MERRIAM 



(AJ)8tract) 



Within the past decade we have come to know Pliocene mammalian faunas 

 in at least six important localities of the Pacific Coast and Great Basin 

 provinces. These faunas represent two or more zones. A third zone is pos- 

 sibly represented by faunas known at localities not included in the six stations 

 to which reference has been made. 



The Pacific Coast and Great Basin Pliocene faunas have many faunal ele- 

 ments known also in the Pliocene of the middle and southern Great Plains 

 region and in that of the South Atlantic provinces. Although no one of these 

 North American faunas is as yet known in full, suflBcient evidence is at hand 

 to advance somewhat our knowledge of these relationships and relative age. 



The Pliocene mammal faunas of North America contain a considerable num- 

 ber of recently discovered elements, appearing also in late Tertiary formations 

 of Asia and Europe. An assembling of evidence now available makes possible 

 some advance in our knowledge of world relationships of Pliocene faunas. 



This instructive paper was followed by two very interesting accounts 

 of the geologic work and the results of studies on the Tertiary of western 

 Nebraska by Doctor Matthew and Professor Osborn. 



