550 



CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



Locality 426. One and one-half miles west of Tomales on 

 county road. Merced formation. 



Colls., J. B. Kerr and R. E. Dickerson, 

 July 22, 1916. 

 545A. One-quarter mile SE. of 546. 

 546. Merced fossils from Wilson Ranch, Sonoma 

 Co. Pliocene. Coll., R. E. Dickerson. 



Locality 572. Petaluma Quadrangle, 122° 37' West Longi- 

 tude, 38° 10' 5" North latitude, beneath the basalt 

 of Burdell Mountain. 



Coll., R. E. Dickerson, June 21, 1918. 

 List of species from the Merced (Pliocene) Group 



Locality 

 Local ity 



PELECYPODA 



Area trilineata Conrad 



Cardium cf . meekianum Gabb 



Cardium, sp 



Glycimeris cf. gabbi Dall 



Cryptomya californica Conrad 



Cryptomya ovalis Conrad 



Macoma edentula (?) Broderip & Sowerby.. . 



Macoma nasuta Conrad 



Mya, sp 



Panope generosum (Conrad) 



Paphia staleyi Gabb 



Pecten turneri Arnold 



Pecten cf. turneri Arnold 



Saxidomus (?), sp 



SchizothTrus cf. pajaroensis Conrad 



Solen sicarius Conrad 



Spisula albaria (Conrad) 



Spisula cf . falcata (Gould) 



Spisula voyi (Gabb) 



Spisula cf. voyi (Gabb) 



Spisula (?), sp 



Tivela crassatelloides (Conrad) 



GASTROPODA 



Astralium sp 



Bathytoma carpenteriana fernandoana Arnold. 



Calyptnra inornata Gabb 



Chrysodomus imperialis Dall 



Chrysodomus portol :< nsis Arnold 



Crepidula adunca Sowerby 



Crepidula grandis Gabb 



Crepidula princeps Conrad 



Drillia mercedensis Martin 



Nassa calif orniana Conrad 



Nassa moraniana Martin 



Natica consors Dall 



Natica cf. consors Dall , 



Olivella biplicata Sowerby 



Thais papillus (Linnaus) 



Trophon (?), sp 



Balanus, sp. 



CRUSTACEA 



411 



+ 



+ 



413 



+ 



+ 



+ 



+ 



+ 



414 



+ 



426 



+ 



545A 



+ 



546 



572 



+ 



+ 



