1914] Dickerson : Fauna of the Martinez Eocene of California 115 



Partial List op Species in the Basal Tejon South op Mount Diablo- 



(Continued) 



Pteria( ?), sp. 

 Solen parallelus Gabb 

 Tapes conradiana Gabb 

 Tapes, sp. 



Tapes(?) quadrata Gabb 

 Teliina ef. aequalis( ?) Gabb 

 Teliina longa Gabb 

 Teliina remondii Gabb 

 Teliina, n. sp. 

 Venus (?), sp., a 

 Venus (?), sp., b 

 Venericardia planicosta Lamarck, 



var. hornii Gabb 

 Yoldia(f), n. sp. 

 Zirphaea( f ), sp. 



Dentalium cooperi Gabb 

 Dentalium stramineum Gabb 

 Amauropsis alveata Gabb 

 Bulla hornii Gabb 

 Cylichna costata Gabb 



Cassidaria tuberculata (Gabb) 

 Ficopsis remondii (Gabb) 

 Fusus ealifornica Gabb 

 Fusus diaboli Gabb 

 Fusus martinez (Gabb) 

 Fusus, sp. 



Galerus excentricus Gabb 

 Littorina compacta? Gabb 

 Lunatia hornii Gabb 

 Nepttmea ( f ) supraplieata Gabb 

 Neptunea( ?), sp. 

 Neverita secta Gabb 

 Olivella mathewsonii Gabb 

 Perissolax blakei Gabb 

 Pseudoliva volutaeformis Gabb 

 Eimella eanalifera Gabb 

 Surculites, sp. 



Turris perkinsiana (Cooper) 

 Turris, sp., « 

 Turris, sp., b 



Turritella merriami Dickerson 



The basal Tejon in contact with the upper Martinez of the type 

 section is non-fossiliferous and on this account a direct comparison 

 with the upper Martinez is not possible. The Tejon south of Mount 

 Diablo is only ten miles away from the upper Martinez of the type 

 section, so a comparison between the two is profitable. 



The following species are common to the two : 



Cardium cooperi Gabb 

 Leda gabbi (Conrad) 

 Modiolus ornatus (Gabb) 

 Aeila, sp. 



Psammobia hornii (Gabb) 



Dentalium cooperi Gabb 

 Dentalium stramineum Gabb 

 Lunatia hornii (Gabb) 

 Perissolax tricarnatus( '?) Gabb 



Such characteristic species as the following are not found in the 

 basal Tejon : 



Cucullaea mathewsonii Gabb 

 Pholadomya nasuta Gabb 

 Teliina kewi, n. sp. 

 Teliina undulifera Gabb 

 Ampullina striata Gabb 

 Brachysphingus liratus Gabb 

 Bullinula subglobosa Weaver 



Fusus aequilateralis Weaver 

 Heteroterma gabbi Stanton 

 Heteroterma trochoidea Gabb 

 Siphonalia(?) lineata Stanton 

 Turritella pachecoensis Stanton 

 Urosyca caudata Gabb 



This fauna! difference would be far better shown, no doubt, if 

 better collecting places in the uppermost Martinez could be found. 



