GEOLOGIC RELATIONS OF THE MARTINEZ GROUP 775 
to apply the name used by him tothe distinct fauna or group which 
remains. As to the nomenclature of the supposedly conforma- 
ble series, including the Martinez and Tejon, it seems best to 
apply to it for the present the term Martinez-Tejon series, though 
future convenience may demand a special series name. To apply 
the name Tejon to the whole series would be to modify consid- 
erably the meaning of this term as used originally, and would 
have besides the fault of taking the name from a smaller division 
to apply it to a larger, leaving the first to be virtually renamed. 
In conclusion, the group under consideration might be char- 
acterized as follows: The Martinez group, comprising in the 
typical locality between one and two thousand feet of sandstones, 
shales, and glauconitic sands, forms the lower part of a pre- 
sumably conformable series, the upper portion of which is formed 
by the Tejon. It contains a known fauna of over sixty species, 
of which the greater portion is peculiar to itself. A number of 
its species range up into the Tejon and a very few long-lived forms 
are known to occur also in the Chico. Since the Martinez and 
Chico are faunally only distantly related it is probable that an 
unconformity exists between them. Though satisfactory corre- 
lation of Californian formations with the subdivisions of the 
standard geological scale can be accomplished only when the 
local scale is fully worked out, we may, for the present at least, 
accept Mr. Stanton’s correlation of the Martinez with a portion 
of the Eocene. 
Joun C. MERRIAM. 
BERKELEY, CALIFORNIA. 
