FAUNAL RELATIONSHIPS OF THE MEGANOS GROUP 131 
Group in these different areas in the Coast ranges with one another 
and with the marine Ione formation in the Sierra Nevada foothills, 
os 
am 5c 
Fic. 1.—Outline map of California. The numbers indicate the locality of the 
different sections discussed in this paper: (1) Mount Diablo region; (2) region to the 
north of Coalinga; (3) south end of San Joaquin Valley; (4) Camulus quadrangle; 
(5) Table Mountain in the vicinity of Oroville. 
as mapped and described by Lindgren and Turner, not, however, 
including the type section of the Ione. 
