Geological Notes on the Sierra Nevada. — Turner 
23" 
feet, and nine miles northeast of Yreka 4,000 feet, the last two 
localities being given on the authority of Mr. Diller. There 
is thus evidence of an increasing elevation, going north, of the 
mountains of northern California since the deposition of the 
Chico beds. 
The following is a report b} r Mr. T. W. Stanton on the 
Chico fossils collected chiefly by T. W. Stanton and H. W. 
Turner from Butte county : 
"Cretaceous Fossils from Butte County, California. 
Pence's Ranch. 
Ceratia nexilia White. Type of 
species. 
( Jyrodes conradiana < !abb? 
Scalaria mathewsoni Gabb? 
Anomia lineata Gabb. 
Mytilus sp. undi't. 
Perna excavata White. 
Pectunculus veatchi (Gabb). 
Area sp. undet. 
Nucula truncata Gabb. 
Trigonia Ieana Gabb. 
Crassatella tuscana (Gabb). 
Tellina ooides Gabb. 
Lutraria truncata (Jabb. 
Mactra (Cymbophora) as-hburneri 
Gabb. 
Mactra sp. undet. 
Corbula traski ( J a r. i ; . 
Mesalia obsuta White. Type of 
species. 
Chico creek, 10 miles X. E. of the town of Chico. 
Pecten sp. undet. Mactrasp. undet. 
Inocerainus whitneyi Gabb. 
< Jucullsea truncata (Jabb. 
Haydenia impressa Gabb. 
Cominella lecontei White. Typ 
of species. 
Fulgur hilgardi White. Type o 
Species. 
Potamides tennis Gabb. 
Scobinella dilleri White. 
Perissolax brevirostris Gabb. 
Eripachya ponderosa Gabb. 
Baculites chicoensis Tkask. 
( Jrassatella tuscana < Jabb. 
Cardium (Protocardia) placerensis 
(<A15B. 
( llisocolus dubius * }abb. 
< ihione varians Gabb. 
Mactra (Cymbophora) ashburneri 
Gabb. 
Inocerainus wiiilueyi GABB. 
Modiola sp. undet. 
( 'uculla'a truncata < ■aim;. 
Pectunculus veatchi (< Jabb) 
Nucula truncata < Jabb. 
Trigonia evansana Meek. 
Trigonia Ieana < Jabb. 
Gyrodes expansa Gabb. 
( Jeratia nexilia White. 
Perissolax brevirostris Gabb. 
Sycodes cypraeoides Gabb. 
Rostellites gabbi White. 
Cinulia obliqua < rABB. 
Baculites chicoensis Trask. 
Ammonites newberryanus Meek. 
Ammonites sp. undel . 
Bl'TTE CHEEK, NEAK CeNTEKVILLE. 
Trigonia navis Gabb. 
Crassatella luscana (0 \m;>. 
Cardium (Protocardia) placerensis 
( rABB. 
Clisocolus cordatus Whiteaves. 
( 'hione varians < I \ bb. 
< '\ therea nitida <abb). 
