166 PROCEEDINGS OF THE PALEONTOLOGICAL SOCIETY 



beds contain a colder water fauna, wiiich has been designated as the Acila 

 gettysburgensis zone. This fauna is absent in the southern embayment. 



PALEONTOLOGY AXD STRATIGRAPHY OF THE PORTER DIVISION OF THE 

 OLIGOCENE IN WASHINGTON 



BY KATHEEINE E. VAN WINCKLE 



{Abstract) 



The report embodies the results of stratigraphic and faunal studies of the 

 Porter division of the Oligocene of Washington at the type locality on Porter 

 Creek. The formation consists predominantly of shaly sandstones and sandy 

 shales having a thickness of 1,200 feet. These beds rest unconformably on 

 Tejon basalts. From the lower portion of the section a marine invertebrate 

 fauna of 20 species was obtained, while from the upper beds 30 species were 

 secured. Twelve species occurring in the lower beds are common to those in 

 the upper. The fauna at Porter has a closer similarity to that at Lincoln 

 Creek than it has to the Blakely fauna at Restoration Point. It is possible 

 that the beds at Porter can be correlated with those exposed at Lincoln Creek. 



Read by C. E. Weaver. 



FAUNAE ZONES OF THE OLIGOCENE 

 BY B. L. CLAEK 



CLIMATE AND ITS INFLUENCE ON OLIGOCENE FAUNAS OF THE PACIFIC 



COAST 



BY ROY E. DICKERSON 



At the conclusion of the reading of the papers the meeting adjourned 



Register of Members axd Visitors at Stanford Meeting, 1917 

 E. M. Butterworth W. S. W. Kew 



J. P. BUWALDA W. F. LOEL 



B. L. Clark J. C. Merriam 



r. e. dickerson j. 0. xomland 



Childs Frick Ida Oldroyd 



Mrs. Childs Frick K. H. Schilling 



G. C. Gester J. P. Smith 



H. Gester W. S. T. Smith 



H. J. Hawley Chester Stock 



E. S. Heath C. M. AVagner 



A. R. Kellogg C. E. Weaver 



