Ilesozoic and Crenozoic Geology and Palceontology. 183 



Bed F.— Gra3'ish and light gray, rather coarse-grained sandstone, 

 with much sulphate of alumina (?) disseminated through it. Along 

 White river valley, on the south side. ■ Thickness, 20 feet. 



Bed G. — Yellowish-gray grit, passing down into a j'ellow and light 

 3'ellow argillo-calcareous marl, with numerous calcareous concretions, 

 and much crystalline material, like sulphate of baryta. Fossils : 

 Hipparion^ Merychippus and Steneojiber. Bijou Hills, Medicine 

 Hills, Eagle Nest Hills, and numerous localities on south side of 

 White river, also at the head of Teton river. Thickness, 50 feet. 



Bed H. — Gray and greenish -gray sandstone, varying from a very 

 fine compact structure to a conglomerate. Bijuu Hills, Medicine 

 Hills, and Eagle Nest Hills. Thickness, 20 feet. 



T. A. Conrad described,* from the Miocene, in Monterey county, 

 California, Mya subsinuata ; from San Pablo bay, Pecten pahloensis ; 

 from Santa iMargarita, Salinas valle}', California,! Hinnites crassus ; 

 from between La Purissima and Santa Inez, Pecten diocus ; from Santa 

 Inez mountains, Pecten magnolia, Tapes inezensis, Crassatella collina, 

 3Iytilus inezensis, Turritella inezana, T. variata, I^atlca inezana ; 

 from Estrella valley, Cyclas estrellana, Ostrea panzana, Glycimeris 

 estrellamis^ Astrodapsis antlselU ; from San Buenaventura, 2\(pes 

 montana, Perna monf.ana; from Pajaro river, Santa Cruz, Venus 

 pajaroana ; from the shore of Santa Barbara county, Arcopagia unda; 

 from Sierra Monica, Cyclas permacra, Ostrea subjecta ; Irom San Luis 

 Obispo valley. Area obispoana ; from Salinas river, JMontere3' county. 

 Dosinia montana, D. stibobliqnti ; and from Gaviote Pass, Mactra 

 gaviotensis, and Trochita costellata. 



He described]; from supposed Miocene strata at Eancho Helena, 

 below Salado, Ostrea veleniana, and from Western Texas, in strata 

 supposed to be Eocene, Venus vesjyertina. I am inclined to believe, 

 however, that this is a Cretaceous species. 



He described, § from the Eocene of Alabama, Caljjptrophorus trino- 

 dt'ferus. 



Dr. Thomas Antisell|| made the following section of the Miocene 

 strata of California, viz : 



\. Upper Miocene, consisting of bituminous and foraminiferous 

 beds, trappean conglomerate, soft, yellow sandstone, foraminiferous 

 layers and argillite beds. Tliicknoss, 400 feet. 



* Expl. and Sur. R. R. Miss. Riv. to Pacific ocean, vol. vi. 



f Expl. and Sur. R. R. Miss. Riv. to Pacific ocean, vol. vii. 



t U. S. and Mex. Bound, Sur. vol. i. 



g Pro. Acad. Nat. Sci., vol. ix. 



II Expl. and Sur. R. R. Miss. Riv. to Pacific ocean, vol. vii. 



