Partial List of Species in the Chehalis Horizon of the Tejon Series {Middle 



Eocene) on the Cozvlits River and Bordering the 



Chehalis Valley, Washington. 



s8 



Pelecypoda: 



Avicula pellucida Gabb 



Cardium hreweri Gabb 



Corhula horni Gabb 



Crassilellites compacta Gabb . . . 

 CrassitelUles grandis Gabb .... 

 Crassilellites uvasana Conr .... 

 Macrocallisla conradiana Gabb . 



Marcia quadrata Gabb 



Merelrix californica Conr.'^. . . . 



Meretrix horni Gabb 



Meretrix ovalis Gabb 



Merelrix uvasana Conr 



Millha tiirneri Stanton 



Modiolus ornatus Gabb 



■Ostrea idriansis Gabb 



Solen parallelus Gabb 



Tellina horni Gabb 



Tellina tonga Gabb 



Tellina retnondi Gabb 



Venericardia horni Gabb'^ 



*Gasteropoda : 



Amauropsis alveala Conr 



Ancillaria bretzi Wvr 



CalyplrcBa excenlrica Gabb 



Conus retnondi Gabb'^ 



■Crepidula pileum Gabb 



Exilia diahloi Gabb'^ 



Ficopsis horni Gabb 



•Gyrineum washinglonianum Wvr . 



Milra washingtoniana Wvr 



Morio tuberculalus Gabb 



Murex sopenahensis Wvr 



Olivella mathewsoni Gabb 



Perissolax washingtoniana Wvr'^. 



Polinices horni Gabb 



Polinices secta Gabb 



Pseudoliva volutceformis Gabb . . . 



Rimella simplex Gabb 



Sinum obliquum Gabb 



Slrepsidura whilneyi Gabb 



Thais eocenica Wvr 



Trilonium cowlilzense Wvr 



Turris fresnoensis Arn 



Turris io Gabb 



Turris sinuala Gabb^^ 



Turritella uvasana Conr 



SCAPHOPODA : 



Dentalium cooperi Gabb 



Dentalium stramineum Gabb .... 



Cephalopoda: 



Atari a mathewsoni Gabb 



1® Species supposed to be characteristic of this horizon. 



