Mesozoic and Cccvozoic Geology and Palaiontology. 22i> 



NORTH AMERICAN MESOZOIC AND C^NOZOIC 

 GEOLOGY AND PALEONTOLOGY. 



By S. A. Miller, Esq. 



\^Continued from page 161.] 



Dr Joseph Leid}'* described, from the Triassic rocks of Star Canon. 

 Humboldt county, and from Toij^abe Range northeast of Austin, Ne- 

 vada, Cymbospondyhbs peti'inus, C. piscosus and Chonespondylu.^ 

 grandis. And Prof. E. D. Cope, from Chatham count}^ North Carolina, 

 the batrachian Pariostegus myops. 



In 1869, T. A. Couradf referred the clays on the Raritan river, in 

 New Jerse}', which are found at the base of the Cretaceous, to the 

 Triassic, and described Podozamites proxbnus and Palceocypi'is tri- 

 nodiferus. He described from South river,+ New Jersey, Astarte veta, 

 and A. annosa, and from Perkiomen Creek, Pa.,§ Solenomya triasina. 



Prof E. D. Cope, II from the Triassic at Phoenixville. on the Schuyl- 

 kill river, Pa., the Saurian Belodon leptarus. 



In 1870, W. M. Gabb^ described, from New Pass, near Austin, and 

 in the slates of Star Canon, Cardinia ponderosa, Posidonomya blatch- 

 leyi, CassianeUa lingulata and Monotis ch'culat'is. And from the 

 Jurassic of the mining district of Volcano, in Nevada, Ammonites ne- 

 vadensis, Turbo regius, T. elevatus, Pholadomya multilineata, P. 

 nevadana, Gonio^nya aperta, Cardium arciformis, Astarte appressa, 

 PUcatula perimbricata, and Spirifera obtusa; and from the slates on 

 the west slope of the Sierra Nevada, near Colfasr, Ammonites colfaxi. 



In 1871, Prof. J. W. Dawson** described from the Trias of Prince 

 Edward Island, Z)a(Zox?/?on edv i rdanum siud Cycadoidea abequidensis. 



In 1872, ff he said the Trias of Prince Edward Island is represented 

 principally by bright red sandstone, sometimes mottled with white and 

 associated occasionally with beds of gray and white sandstone. Sub- 

 ordinate to these sandstones are beds of red and mottled clay, of red- 

 dish concretionary and conglomerate limestone, sometimes dolomitic. 

 and of reddish conglomerate with quartz pebbles and arenaceous 



* Proc. Acad. Nat. Sci. 



t Am. Journal Sci. and Arts. 2d scries, vol. 47, 



X Am, Jour. Conch., vol. 4. 



I Am. Jour. Conch., vol. 5. 



il Trans. Am. Phil. Soc. 



H Am. Jour. Conch., vol. 5. 

 ** Report on Prince Edward Island, 

 tt Lond. Geo. Mag., vol. 9. 



