232 PROCEEDINGS OF THE PALEONTOLOGICAL SOCIETY 



READING OF PALEONTOLOGICAL PAPERS 



The following paleontological papers were then read : 



8TRATIGRAPHIC AND FAUNAL RELATIONS OF THE MEGANOS GROUP (MIDDLE 



EOCENE), CALIFORNIA 



BY B. L. CLARK 



CENOZOIC HISTORY OF THE GROUND SLOTH GROUP 

 BY CHESTER STOCK 



(Abstract) 



The gravigrade edentates afford an interesting example of mammalian evo- 

 lution during the Cenozoic in America. They are intimately associated with 

 the Tertiary and Pleistocene histories of North and South America and indi- 

 cate former land connections between the two continents, with evidence as to 

 periods of such connections. Genera of the ground sloth group, known from 

 the Miocene, Pliocene, and Pleistocene, arrange themselves in phylogenetic 

 series illustrating principles of paleontology. 



Mr. J. Z. Gilbert spoke concerning some recent investigations of the 

 fossil fishes of California. 



Following the presentation of the program the meeting adjourned. 



LUNCHEON AND EXCURSIONS 



Members of the Paleontological Society partook of luncheon served, 

 through the courtesy of the Throop College of Technology, to the Pacific 

 Division, American Association for the Advancement of Science, on 

 Thursday and Friday, June 19 and 20, 1919. Members of the Society 

 also attended a dinner of the Western Society of Naturalists on Friday 

 evening, June 20, 1919, at the Maryland Hotel, Pasadena. 



Under the direction of Dr. Frank S. Daggett, Director of the Museum 

 of History, Science, and Art, in Los Angeles, California, an excursion 

 was made to the Pleistocene asphalt deposits of Eancho La Brea. Later 

 the visiting members returned to the museum and viewed the collections 

 of vertebrate remains secured from the asphalt beds. 



