UNIVERSITY OF CALIFORNIA PUBLICATIONS 



BULLETIN OF THE DEPARTMENT OF 



GEOLOGY 



Vol. 6, No. 7, pp. 167-169, PI. 29 Issued April 18, 191 1 



A COLLECTION OF MAMMALIAN REMAINS 

 FROM TERTIARY BEDS ON 

 THE MOHAVE DESERT 



BY 



JOHN C. MERRIAM. 



Through the kindness of Mr. John R. Suman of the Univer- 

 sity of California, the writer has recently received an interesting 

 collection of mammalian remains obtained by Mr. H. S. Mourn- 

 ing of Los Angeles, from deposits exposed in the Mohave Desert 

 region, about ten miles northwest of Barstow, San Bernardino 

 County, California. Mr. Mourning and Mr. Suman very kindly 

 presented the collection to the University. This material is of 

 especial interest as it represents a mammalian fauna which may 

 serve as a basis for correlation with faunas of the well-known 

 mammal-bearing epicontinental formations of the basin and great 

 plains regions to the east, and may thus assist in determining the 

 relation of the Tertiary geologic scale of California to that of the 

 interior region. 



As yet nothing is known regarding the nature of the forma- 

 tion in which the collection was obtained. According to a sketch 

 map published by Hershey 1 the point at which the collection was 

 made would fall within the limits of what is designated by 

 Hershey as the Rosamond series. This series has not, however, 



i Hershey, O. H, Univ. Calif. Publ. Bull. Dept. Geol., vol. 3, opposite 

 p. 3. 1902. 



