Vol. V] DICKERSON— FAUNA OF THE TYPE TEJON 2)7 



covered by the different members of the survey at various 

 points on the eastern face of the same range as far south as 

 New Idria, and in the summer of 1866 by Mr. Gabb in Men- 

 docino County, near Round Valley, the latter locality being 

 the most northern point at which it is as yet known ". 



"This group contains a large and highly characteristic 

 series of fossils, the larger part pecuHar to itself, while a con- 

 siderable percentage is found extending below into the next 

 group (Martinez)". 



For several years the controversy concerning the age of the 

 Tejon was waged. Conrad,* Gabb,^ Whitney,® Cooper,^ 

 Marcou,' Heilprin,' Newberry,^" White," -Becker/- Clark,^^ 

 Harris,^* Diller,^^ all contributed to this question. The cre- 

 taceous ghost of the Tejon was finally laid by Stanton^'' and 

 Merriam.^' Most of the papers cited deal with the Tejon in 

 general, and direct references to the type locality are few in 

 number. 



* Conrad, T. A., "Obsei-vations on Certain Eocene Fossils described as Cretaceous, 

 by W. M. Gabb in his Report published in "Palaeontology of California", Am. Jour. 

 Conchol., vol. 1, pp. 362-365, 1865; "Further Observations on Mr. Gabb's Palaeontology 

 of California", Am. Jour. Conchol., vol. 2, pp. 97-100, 1866; "Check list of Invertebrate 

 Fossils of North America, Eocene and Oligocene", p. 37, Smithsonian Misc. Coll. No. 

 200, 1866; Am. Jour. Sci., 2nd series, vol. 44, pp. 376-377, 1867. 



' Gabb, W. M.. Reply to Mr. Conrad's Criticism on Mr. Gabb's Report on the 

 Palaeontology of California", Am. Jour. Conchol. vol. 2, pp. 87-92, 1866; Amer. Jour. 

 Sci., 2nd series, vol. 44, pp. 226-229, 1867; On the Subdivisions of the Cretaceous 

 Formation in California, Cal. Acad. Sci. Proc, 1st series, vol. 3, pp. 301-306, 1867; 

 Gaol. Surv. California, Palaeontologry, vol. 2, 1869. 



« Whitney, J. D., Geol. Surv. California, Palaeontology, vol. 2, 1869. 



' Cooper, J. G., "The Eocene Epoch in California — Are there really no Eocene 

 strata?", Cal. Acad. Sci. Proc, 1st series, vol. 5, pp. 419-421, 1874. 



"Marcou, J., Am. Rept. Geog. Surv. West 100° Merid., pp. 167-169, 1876; "Note 

 sur la geologic de la Californie", Bull. Soc. geol. France, 3rd series, vol. 11, pp. 407- 

 435. 1883. 



• Heilprin, A., "On the Occurrence of Ammonites in Deposits of Tertiary Age", 

 Proc. Acad. Nat. Sci. Phila., vol. 34, p. 94, 1882; "On the Age of the Tejon Rocks of 

 California, and the Occurrence of Ammonitic Remains in Tertiary Deposits", Proc. 

 Acad. Nat. Sci., Phila., vol. 34, pp. 196-214, 1882. 



" Newberry, J. S., "On Supposed Tertiary Ammonites", Proc. Acad. Nat. Sci. Phila., 

 vol. 34, pp. 194-195, 1882. 



^^ White, C. A., On Marine Eocene, Fresh Water Miocene and other fossil Mollusca 

 of Western North America, Bull. 18, U. S. Geol. Surv., pp. 7-9, 1885. 



" Becker, G. F., "Notes on the Stratigraphy of California", Bull. 19, U. S. Geol. 

 Surv., pp. 1-25, 1885. 



"Clark, Wm., "Correlation Essays, Eocene", Bull. 83, U. S. Geol. Surv., pp. 95-110, 

 1891. 



" Harris, G. D., "Correlation of the Tejon with Eocene Stages of the Gulf Slope", 

 Science, vol. 22, p. 97, 1893. 



"Diller, J. S., Bull. Geol. Soc. Am., vol. 4, pp. 218-220, 1893. 



" Stanton, T. W., "The Faunal Relations of the Eocene and Upper Cretaceous on 

 the Pacific Coast", 17th Annual Report, U. S. Geol. Surv., pp. 1011-1059, 1896. 



" Merriam, J. C, "The Geological Relations of the Martinez Group of California at 

 the Typical Locality", Jour. Geol., vol. 5, pp. 767-775, 1897. 



