18 CALIFORNIA ACADEMY OF SCIENCES [Proc. 47H Sex. 
of conformity exists between the two lower members, and less 
between the others, as will be shown farther on. 
The Temblor Beds.—Probably the most persistent member, 
after proper discriminations are made, is the lower, which is 
also the one best characterized by fossils, and 1s therefore the 
most easily recognized faunally. Its occurrence at the type 
locality has been already sufficiently described. It has also 
been noted at intervals along the eastern base of the range as 
far north as Coalinga. Northward of Coalinga the Temblor 
beds follow the range for an unknown distance, but certainly 
to the Cantua creek and to New Idria. They maintain a 
fairly uniform thickness and constant sequence of strata, 
though not always a constant fauna. Just north of the Cantua 
on the Lillis ranch, the following representative section was 
noted : 
INIEOCET ET Strata eres eee a AeMuen ieee nner ege nea tana, 2000 feet 
Temblor Beds 
(g) Thin calcareous beds with 
Turritella ocoyana ..... 30 feet 
(f) Clay shales with Foramin- 
RETA re ae ee Melina kage 15Owi 
(e) Loose gray sands ........ 60 “ 
(d) Thin calcareous sand with 
Turritella ocoyana .... Sige 
(c) Loose friable sands ...... SOnuie 
(b) Yellow sands with Turri- 
tella ocoyana .......... Bens: 
(a) Gray sands and gravels.... 50 ~ 
Hard calcareous bed with 
DEOMCIES sonascoovcoauc ONed 
Loose gray sands ........ 100 “ 
Total .. —————__ 491 “ 
White shales with Pecten peckhami.. 800 “ 
Usually there are three layers of fossiliferous rock within 
the Temblor horizon, bearing typical Lower Miocene fossils 
such as the following: 
(a) Loose sands with Pecten discus CoNRAD 
Astrodapsis sp. 
Barnacles, etc. 
