88 University of California Publications in Geology [Vol. 8 



veatchii var. major, Leda alaeformis, Actaeon lawsoni do not occur in 

 the uppermost Martinez. Although the fauna is small, it appears 

 sufficient to correlate it with the Trochocyathus zitteli zone of the type 

 section. Dr. Stanton 21 reports the following fauna from beds "several 

 hundred feet higher in the section ' ' : 



Modiolus ornatus (Gabb) Fusus flexuosus Gabb 



Glyeimeris sagittata (Gabb)? Turritella infragranulata Gabb 



Nucula truneata Gabb Braehysphingus liratus Gabb 



Meretrix, sp. Cylichna costata Gabb 



Tellina(?) undulifera Gabb Actaeon, sp. 

 Tellina hoffmaniana Gabb 



This fauna comes from the upper beds. The Martinez exposed 

 along the Carquinez Strait probably includes the three major zones. 

 The lack of fossils makes it a poor section for the palaeontologist, 

 but for the geologist is is one of the best in the vicinity. 



Martinez at Selby Smelter 

 This locality was discovered by Robert Pack and Clark Gester while 

 students in the University of California. J. R. Powers made thorough 

 collections in both the Chico and the Martinez near the Southern 

 Pacific tunnel. The writer has identified most of the material collected 

 at this locality (no. 1888). 



List of Species 



Flabellum remondianum Gabb Amauropsis martinezensis, n. sp. 



Trochocyathus zitteli (Merriam) Braehysphingus liratus Gabb 



Schizaster leeontei Merriam Dentalium cooperi Gabb 



Cueullaea mathewsonii Gabb Fusus(?), n. sp. 



Cardium cooperi Gabb Fusus(f), sp. 



Glyeimeris, sp. Ileteroterma gabbi Stanton 



Leda gabbi Conrad Perissolax tricarnatus Weaver 



Nucula (Acila) truneata Gabb(?) Surcula near praeattenuata Gabb 



Ostraea weaveri, n. sp. Surcula (Surculites) inconspicua 



Phacoides turneri (Stanton) Gabb 

 Solen, sp. Surcula merriami, n. sp. 



Tellina kewi, n. sp. Turritella, sp. 



Tellina, sp. Urosyca caudata Gabb 



Serpula, sp. Urosyca robusta Weaver 



This fauna evidently belongs to the Trochocyathus zitteli zone. 

 As in nearly all new Martinez localities, new or unplaced forms 

 occur here, such as Surcula near praeattenuata Gabb, Surcula 



21 Stanton, T. W., The Faunal Kelations of the Eocene and Upper Cretaceous 

 on the Pacific Coast, 17th Ann. Eept. U. S. Geol. Surv., p. 1024, 1895-6. 



