1917] Nomland: The Etchegoin Pliocene of Middle California 215 



Creek a short distance above its junction with Stone Canon and on 

 Big Sandy Creek about one-half mile above its confluence with Stone 

 Canon, near the southeast corner of Priest Valley Quadrangle. 



Fauna From Big Sandy Creek and Whalen Creek 



Dendraster gibbsii (Remond) Pecten healeyi Arnold 



Cardium, cf. quadrigenarium Conrad Phaeoides, sp. 



Cryptomya californiea (Conrad) Sehizothaerus nuttalli (Conrad) 



Maeoma nasuta (Conrad) Siliqua lucida (Conrad) 



Mulinia densata Conrad Solen, cf. sicarius Gould 



Ostrea, sp. Zirphaea, sp. 



Pandora punctata Conrad Calliostoma, sp. 



Paphia, sp. Chrysodomus, sp. 



Paphia, cf. tenerrima (Carpenter) Nassa califomiana (Conrad) 



Pecten estrellanus catalinae Arnold Natiea recluziana Petit 



About one and one-half miles southwest of Lonoak post-office, Priest 

 Valley Quadrangle, the following fauna indicative of the middle Etche- 

 goin has been found. The fossils occur in a series of beds of fine white 

 ashy shale, extensively distributed in this area. 



Fauna From Lonoak 

 Cryptomya calif ornica (Conrad) Fissuridea, cf. unica, n. sp. 



Ostrea atwoodi Gabb Natica, sp. 



Pecten oweni Arnold Trophon, sp. 



Pecten estrellanus Conrad, var. Tamiosoma gregaria Conrad 



Also on Vineyard Creek, San Luis Obispo County, and Indian 

 V alley, Monterey County, west of the Diablo Range, Etchegoin sand- 

 stone and conglomerate overlying Santa Margarita shale is extensively 

 distributed. The included fauna is apparently of lower Etchegoin or 

 "Jacalitos" age. 



FAUNA OF L ACUSTBINE ( ? ) BEDS 

 In the north central part of the Kettleman Hills, near the middle 

 of the southern part of sec. 12, T. 22 S, R. 17 E, M. D. B. & M., a bed 

 containing fresh-water fossils was discovered recently by the writer. 

 According to its location with respect to the upper Mulinia zone as 

 mapped by Arnold and Anderson this bed comes only a short distance 

 above what is called by them the base of the Etchegoin. Tbis would 

 therefore come at about the same horizon as is represented by the 

 unconformity recently described 30 in the region north of Coalinga. 

 It appears that the time-interval marked by the unconformity of 



30 Nomland, J. O., Relation of the invertebrate to the vertebrate faunal zones 

 of the Jacalitos and Etchegoin in the North Coalinga Region, California, Univ. 

 Calif. Publ. Bull. Dept. Geol., vol. 9, p. 80, 1916. 



