GEOLOGIC RECONNAISSANCE IN BAJA CALIFORNIA 729 
n.sp., cf. C. guadrigenarium Conrad. In the bluffs 5 miles east of 
San Quintin there were collected Turritella n.sp.; Leda sp.; Tel- 
lina sp., cl. T. hornit Gabb; and Spisula sp., cf. S. merriami Gabb. 
In the drift at the mouth of San Simon Cafion, 6 miles southeast 
of San Quintin, Cardium cooperi Gabb ? was collected. These are 
all regarded as Tejon or Upper Eocene in age. The following 
fossils were collected from two horizons in the slopes about 5 miles 
northeast of Santa Caterina Landing: Upper beds, Surcula sp.; 
Heierotoma gabbi Stanton: Turritella pacheococensis Stanton ?; 
Turritella sp.; Natica (gyrodes), cf. N. lineata Dickerson; Amaurop- 
sis sp.; Dentalium coopert Gabb?; Leda sp. 2; Glycimeris n.sp. 
aff. G. veatchit var. major Stanton; Cucullaea matihewsoni Gabb; 
Ostrea sp. ind.; Pecten sp.; Pinna sp.; Crassitellites sp.?; Veneri- 
cardia planicosta Lamarck var.; Phacoides sp., cf. P. diegoensis 
(Dickerson); Phacoides sp.; Cardium cooperi Gabb?; Cytherea sp. 
aff. C. hornit Gabb; Spisula sp. The age of these is regarded as 
Upper Martinez or Middle Eocene. 
From beds 200 feet lower were collected: Cucullaea matthewsonti 
Gabb?; Ostrea sp. ind.; Anomia sp.; Lima multiradiata Gabb; 
Phacoides sp.ind. The age of these is regarded as Lower or Middle 
Martinez or Lower Eocene. 
Emmons and Merrillt reported fossils from rolled pebbles of 
impure limestone obtained along the beach of the south of Santa 
Caterina Landing “‘which had evidently fallen from the cliffs above, 
and from a bed of similar composition in place at what was assumed 
to be about 1,200 feet higher in horizon, at San Carlos anchorage 
(collected by Mr. A. E. Foote), 8 miles north of Bluff Point.” 
These were determined by Dr. T. W. Stanton as follows: Cardita 
planicostata Lam., Leda gabbi Conrad, Urosyca caudita Gabb, and 
undetermined species of Nucula, Pectunculus, Tellina, Turritella, 
Dentaliuwm, and Crassatella. ‘These forms were regarded as Tejon 
(Upper Eocene). 
EOCENE (?) WEST OF LA PAZ 
Sandstones which appear to be of Eocene age outcrop in an oval 
area of about 200 square miles in the valleys of arroyos Liebres, 
Colorado, San Hilario, and Guadalupe, all west of San Hilario. 
1 Op. cit., pp. 501-2. 
