1916] 



Dicker son : 



Tejon Eocene of California 



427 



List of Species From University of California Locality 1817 — (Continued) 



Type Turbinolia 

 Tejon Zone 



Nyctilochus, cf. whitneyi (Gabb) X x 



Naticina obliqua Gabb x 



Odostomia packi, n. sp x 



Rimella simplex Gabb x 



Surcula io Gabb x 



Terebra californica Gabb x 



Turris guibersoni Arnold 



Turris monolifera (Cooper) x 



Turris suturalis (Cooper) 



Turris fresnoensis Arnold 



Turris, sp. a 



Turritella andersoni, n. sp 



Cancer(?), sp. a x 



Cancer(?), sp. b x 



Trochocyathus imperialis Nom. occurs at University of California 

 locality 1412 in the middle of the Tejon section south of Diablo. 

 Turbinolia dickersoni Nom., Turbinolia, pusillanima Nom., Area 

 hornii, Cardium cooperii, Cardium brewerii, Corbula parilis, Leda 

 gabbi, Meretrix ovalis, Meretrix hornii, Modiolus ornatus, Acila 

 gabbiana, n. sp., Venericardia planicosta hornii, Ancillaria elongata, 

 Cylichna costata, Ccdyptraea excentrica, are forms which are found in 

 the Turbinolia zone south of Mount Diablo. Glycimeris cor, Glycim- 

 eris fresnoensis, n. sp., Architectonica hornii, Cancellaria stantoni. Co- 

 nns hornii, Odostomia packi, n. sp., Surcula io, Ficopsis hornii, Ficopsis 

 remondii, Cad id us pusillus, Lunatia nuciformis, 31i.tr a simplicissima, 

 Chrysodomus supraplicata, Nyctiloch us calif ornicus, Nyctilochus whit- 

 neyi, Naticina obliqua, Rimella simplex, Terebra californica, are all 

 characteristic forms at the type locality of the Tejon. Isocardium tejo- 

 nensis Waring, Nucida cooperi, Turris monolifera, Turris suturalis, 

 Turris perkinsiana, are all present in the uppermost or Siphonalia sut- 

 terensis zone, of the Tejon group. Turritella andersoni, n. sp., is 

 found in the middle of the Tejon section south of Mount Diablo. Fla- 

 bellum merriami, n. sp., Crassatellites lillisi, n. sp., Marcia ( f) con- 

 radi, n. sp., Leda fresnoensis, n. sp. Metula harrisi, and Natica, n. sp., 

 are the only forms which have not been reported from the Tejon at 

 other localities or from the Martinez group. Not a single species which 

 is restricted to the Martinez group occurs in this fauna, and its rela- 

 tionship is undoubtedly close to the fauna of the typical Tejon which 

 is equivalent to the Rimella simplex zone. 



Turbinolia pusillanima Nom., Cancer{ t ) , sp. a are characteristic 

 of the Turbinolia zone of the Diablo section (see fig. 1). This 



