EXPLANATION OF PLATE 6 



Fauna of Martinez Eocene 



Fig. la. Flabellum remondianum Gabb. X 1. 



This species ranges from the lowermost to the uppermost Martinez 

 in the Mount Diablo region and the type locality. As far as known it 

 is restricted to the Martinez Group. The proportions of this species 

 are variable. 



Fig. lb. Fabellum remondianum Gabb, showing a shorter specimen. X 1. 



Fig. lc. Flabellum remondianum Gabb. Cross-section view after Vaughan. X 2. 



Fig. Id. Flabellum remondianum Gabb. Bottom view. X 1. 



Fig. 2. Paracyathusf ?), sp. X 1. 



Fig. 3a. Trochocyathus zitteli (Merriam). X 1. 



This individual coral is distinctive of the middle zone of the Mar- 

 tinez and restricted to it. Its variations in shape and size are note- 

 worthy. 



Fig. 3b. Trochocyathus zitteli (Merriam), showing high specimen. X 1. 

 Fig. 3c. Trochocyathus zitteli (Merriam), showing stout specimen. X 1. 



Fig. 3d. Trochocyathus zitteli (Merriam). Cross-section view after Vaughan. 



X 3%. 



Fig. 4a. Cidaris, sp. (a). X 2. 



Fig. 4?>. Cidaris, sp. (a), distal end. X 5. 



Fig. 5. Cidaris, sp. (d). X 2. 



Fig. 6a. Cidarisf ? ) , sp. (c), side view. X 2. 



Fig. 6b. Cidarisf?), sp. (c), top view. X 2. 



Fig. 7. Schizaster lecontei Merriam. X 1. 



This echinoderm has an exceedingly great range, being found in 

 the lowermost Martinez and in the uppermost or Siphonalia sutterensis 

 zone of the Tejon Group at the Marysville Buttes. 



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