5g2 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



cinity were carefully searched for fossils but no shells were 

 found which were unmistakably in place. The Tomales 

 formation is apparently largely composed of land-laid de- 

 posits and it appears probable that much of the loosely con- 

 solidated sandstone represents material composing Pleistocene 

 alluvial fans. Most of the headlands on the northeast side 

 of Tomales Bay are thinly coated with these loosely consoli- 

 dated sandstones and conglomerates of the Tomales forma- 

 tion. The even-topped terraces one-quarter of a mile north- 

 west of Point Reyes Station are composed of tan-colored 

 sands and gravels whose pebbles are schist, chert, sandstone, 

 basalt and granite. The occurrence of granite pebbles in 

 these gravels is noteworthy, as it shows that a part of the 

 gravels is due to contributions from the southwestern side of 

 Tomales Bay, thus apparently indicating that the bay was not 

 so extensive during the Tomales-Pleistocene time as today 

 or during the period of deposition of the Millerton formation. 



FAUNA OF THE MILLERTON FORMATION 



A list of species obtained from the Millerton formation 

 is shown in the accompanying table. 



DESCRIPTIONS OF CALIFORNIA ACADEMY OF SCIENCES PLEISTOCENE LOCALITIES 

 OF THE MILLERTON FORMATION 



Locality 412. Cliffs along northeast shore of Tomales Bay, 

 about one-half mile from Ocean. Fossiliferous con- 

 glomerate reef in Pleistocene. This reef is a hard 

 conglomerate made up of schist pebbles on shore 

 line in Pleistocene. Above it is clay shale and soft 

 vellow sandstone. 



Coll., J. B. Kerr, July 24, 1916. 

 Locality 561. Pleistocene fossils occur on east side of 

 Tomales Bay, east of Inverness Yacht Club. 



Coll., R. E. Dickerson, April 4, 1918. 

 Locality 563. Pleistocene fossils on point on east side 

 Tomales Bay, east of Inverness Yacht Club. 



Coll., R. E. Dickerson, April 4, 1918. 



