EXPLANATION OF PLATE 39 



Pig. 1. Ostrea cf. appressa Gabb, X 2. From Tejon of Oroville South Table 

 Mountain. U. C. Locality 2225. 



Fig. 2a, 2b, 2c. Spisula merriami Packard, X 2. Type and co-type 

 from Tejon of Salt Creek about twenty miles north of Coalinga, U. C. 

 Locality 672. 



This is a very common species in the Tejon which ranges from the lower- 

 most Tejon of the Mount Diablo region through the Upper or Siphonalia 

 sutterensis zone. It was formerly identified as Mactra asliburneri Gabb of 

 the Chico Cretaceous. 



Fig. 2d. Spisula merriami Packard X 2. 



This specimen was found at U. C. Locality 2225, Oroville South Table 

 Mountain. 



Fig. 3. Acmaea ruckmani. n. sp., X 3. Type specimen from U. C. 

 Locality 2225. 



Fig. 4. Lunatia nuciformis Gabb, X 3. This species occurs abundantly 

 in both Marysville Buttes and Oroville Eocene strata. The specimen figured 

 is from U. C. Locality 2225. 



Fig 5a. Neverita globosa Gabb, X 3. Aperture view, U. C. Locality 

 2225. A common species in the Siphonalia sutterensis zone. 



Fig 5&. Neverita globosa Gabb, X 1. Back view. 



Fig. 6. Neverita secta Gabb, X 3. This species ranges from the lower- 

 most Tejon of the Mount Diablo region through the Siphonalia sutterensis 

 zone. 



Fig. 7. Cerithiopsis orovillensis, n. sp., X 3. Type specimen U. C. 

 Locality 2225. 



Fig. 8. Clirysodomus martini Dickerson, X 2. This was originally 

 described as Plios (?) martini Dickerson. It is common at U. C. Locality 

 2225, South side Oroville South Table Mountain. 



Fig. 9. Cancellaria stantoni Dickerson, X 3. U. C. Locality 2225. A 

 common species throughout the Tejon. 



Fig. 10. Turritella merriami Dickerson, X 1. U. C. Locality 2225. Range, 

 throughout Tejon group. 



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