PALEONTOLOGY. 371 



PALEONTOLOGY. 



Case, E. C, University of Michigan, Ann Arbor, Michigan. Completion of 

 the work on the Permian vertebrate fauna of North America. (For previous 

 reports see Year Books Nos. 2, 4, 8-12.) 



The field season of 1914 was spent in a study of the Red Beds ex- 

 posed in the Black Hills, Laramie region, Hartville Uplift, and the foot 

 hills of the Rocky Mountains, visiting the type localities of these beds 

 and making a careful comparison of the deposit with the Red Beds of 

 Texas, Oklahoma, and Kansas. 



The especial object of this work was to determine the relation of 

 the northern beds to those of the south and to determine, so far as 

 possible, the conditions under which they were deposited. The main 

 questions, which it is believed may be answered affirmatively, were 

 whether the northern Red Beds are a part of the same area of deposi- 

 tion as those exposed in the south and whether there were two distinct 

 areas of deposition, more or less contemporaneous, one to the east of 

 the Rocky Mountain axis and one to the west. 



Hay, Oliver P., U. S. National Museum, Washington, District of Columbia. 

 Investigation of the vertebrate paleontology of the Pleistocene epoch. (For 

 previous reports see Year Books Nos. 11, 12.) 



After the last annual report was prepared the writer continued his 

 investigations on the Pleistocene Vertebrata of North America and 

 their relations to the various stages of this epoch. During the latter 

 part of 1913 some time was consumed in studying the extinct bisons; 

 the results were published in the Proceedings of the United States 

 National Museum. Later the camels of the extinct genus Camelops 

 were investigated and a paper thereon was published, likewise in the 

 Proceedings mentioned. The months of January and February were 

 spent in visiting the collections contained in various museums, uni- 

 versities, colleges, scientific academies, and in private hands. All 

 together about forty collections were examined, located in northern 

 New York, northern Ohio, southern Michigan, northern Indiana; in 

 Milwaukee, Wisconsin; Mankato, Minnesota; many towns in Iowa; 

 at Lincoln, Nebraska; Kansas City, Columbia, and St. Louis, Missouri; 

 and at Greenville, Ohio. A considerable amount of valuable material 

 was seen and studied. In the museum of the Firelands Historical 

 Society, at Norwalk, Ohio, were found some parts of the skull of an un- 

 described extinct bison, the only extinct species of the genus known 

 to have existed after the disappearance of the last glacial ice sheet. 



Since the first of March the writer has been engaged in further study 

 of horses. In a collection, now in the United States National Museum 

 and made many years ago near Hay Springs, Nebraska, there is the 

 nearly complete skull of a large extinct horse closely resembling the 



