UNIVERSITY OF CALIFORNIA PUBLICATIONS 



BULLETIN OF THE DEPARTMENT OF 



GEOLOGY 



Vol. 5, No. 24, pp. 381-390, PI. 40 Andrew c. lawson, Editor 



THE SKULL AND DENTITION 



OP A 



PRIMITIVE ICHTHYOSAURI AN 



FROM THE 



MIDDLE TRIASSIC 



BY 



JOHN C. MERRIAM 



BERKELEY 

 THE UNIVERSITY PRESS 

 January, 1910 



