CONTENTS 



PAGE 



No. 1. Is the Boulder Batholith a Laccolith? A Problem in Ore- 

 Genesis, by Andrew C. Lawson 1 



No. 2. Note on the Faunal Zones of the Tejon Group, by Roy E. 



Dickerson 17 



No. 3. Teeth of a Cestraciont Shark from the Upper Triassie of 



Northern California, by Harold C. Bryant 27 



No. 4. Bird Remains from the Pleistocene of San Pedro, California, 



by Loye Holmes Miller 31 



No. 5. Tertiary Echinoids of the Carrizo Creek Region in the Colo- 

 rado Desert, by William S. W. Kew 39 



No. 6. Fauna, of the Martinez Eocene of California, by Roy Ernest 



Dickerson 61 



No. 7. Descriptions of New Species of Fossil Mollusca from the 



Later Marine Neocene of California, by Bruce Martin 181 



No. 8. The Fernando Group near Newhall, California, by Walter A. 



English 203 



No. 9. Ore Deposition in and near Intrusive Rocks by Meteoric 



Waters, by Andrew C. Lawson 219 



No. 10. The Agasoma-Like Gastropods of the California Tertiary, by 



Walter A. English ! 243 



No. 11. The Martinez and Tejon Eocene and Associated Formations 



of the Santa Ana Mountains, by Roy E. Dickerson 257 



No. 12. The Occurrence of Tertiary Mammalian Remains in North- 

 eastern Nevada, by -John C. Merriam 275 



No. 13. Remains of Land Mammals from Marine Tertiary Beds hi the 



Tejon Hills, California, by John C. Merriam 283 



No. 14. The Martinez Eocene and Associated Formations at Rock 

 Creek on the Western Border of the Mohave Desert Area, 

 by Roy E. Dickerson 289 



No. 15. New Mollusean Species from the Martinez Eocene of South- 

 ern California, by Roy E. Dickerson 299 



No. 16. A Proboscidean Tooth from the Truckee Beds of Western 



Nevada, by John P. Buwalda 305 



No. 17. Notes on the Copper Ores at Ely, Nevada, by Alfred R. Whit- 

 man 309 



No. 18. Skull Dentition of the Mylodont Sloths of Rancho La Brea, 



by Chester Stock 319 



No. 19. Tertiary Mammal Beds of Stewart and lone Valleys in West- 

 Central Nevada, by John P. Buwalda 335 



No. 20. Tertiary Echinoids from the San Pablo Group of Middle Cali- 

 fornia, by William S. W. Kew 365 



No. 21. An Occurrence of Mammalian Remains in a Pleistocene Lake 

 Deposit at Astor Pass, near Pyramid Lake, Nevada, by 

 John C. Merriam 377 



No. 22. Fauna of the San Pablo Group of Middle California, by 



Bruce L. Clark .'. 385 



Index 573 



