000229672 000__ 01455cam\a2200349\a\45e0 000229672 001__ 229672 000229672 005__ 20210513091846.0 000229672 008__ 900503s1990\\\\dcuabf\\\b\\\f000\0\eng\\ 000229672 010__ $$a 90003529 000229672 035__ $$a(OCoLC)ocm21563485 000229672 035__ $$a229672 000229672 040__ $$aDLC$$beng$$cDLC$$dGPO$$dAGL$$dTWT$$dBTCTA$$dOCLCQ$$dGBVCP 000229672 043__ $$an-us-co 000229672 049__ $$aISEA 000229672 05000 $$aQE75$$b.B9 no.1917-B 000229672 074__ $$a0620 000229672 08200 $$a557.3 s$$a564/.53/0978793$$220 000229672 0860_ $$aI 19.3:1917-B 000229672 1001_ $$aCoban, William Aubrey,$$d1916- 000229672 24510 $$aAmmonites and some characteristic bivalves from the Upper Cretaceous Frontier Formation, Natrona County, Wyoming /$$cby William A. Cobban. 000229672 260__ $$aWashington, D.C. :$$bU.S. G.P.O. ;$$aDenver, CO :$$bFor sale by the Books and Open-File Reports Section, U.S. Geological Survey,$$c1990. 000229672 300__ $$aiv, 13 p., 11 p. of plates :$$bill., maps ;$$c28 cm. 000229672 4901_ $$aEvolution of sedimentary basins--Powder River Basin ;$$vch. B 000229672 4901_ $$aU.S. Geological Survey bulletin ;$$v1917-B 000229672 504__ $$aIncludes bibliographical references (p. 11-13. 000229672 650_0 $$aAmmonoidea$$zColorado$$zNatrona County. 000229672 650_0 $$aBivalves, Fossil$$zColorado$$zNatrona County. 000229672 650_0 $$aPaleontology$$yCretaceous. 000229672 650_0 $$aPaleontology$$zColorado$$zNatrona County. 000229672 651_0 $$aFrontier Formation. 000229672 830_0 $$aEvolution of sedimentary basins--Powder River Basin ;$$vch. B. 000229672 830_0 $$aU.S. Geological Survey bulletin ;$$v1917-B. 000229672 85200 $$bgen$$hQE75$$i.B9$$ino.1917-B 000229672 909CO $$ooai:library.usi.edu:229672$$pGLOBAL_SET 000229672 980__ $$aBIB 000229672 980__ $$aBOOK