370 CAKBONIFEROUS FORMATIONS AND FAUNAS OP COLORADO. 



PrODUCTUS NKBRA8KEN8IS Owen. 



PL V, figs. 1, 2, 2a. 



1852. Prodiuius nebrascemis. Owen, Geol. Surv. AVisconsin, Iowa, and Minnesota, p. 584, pi. 5, fig. 3. 



Carboniferous limestone: Bellevue, Missouri River, Nebr. 

 1854. Produdus rogersi Norwood and Pratten, Acad. Nat. Sci. Philadelphia, Jour., (2), vol. 3, p. 9, 

 pi. 1, figs. 3a-c. (Whole volume appeared in 1855.) 



Coal Measures: Near Huntsville, Mo. . 

 1854. Produdus nebjxiscensis. Norwood and Pratten, Acad. Nat. Sci. Philadelphia, Jour., (2), vol. 3, 

 p. 21. (Whole volume appeared in 1855.) 



Coal Measures: Crossing of Big Nemaha, Nebraska Territory. 

 1856. Produdus rogersi. Hall, Pacific Railroad Rept., vol. 3, p. 104, pi. 2, figs. 14, 15. 



Carboniferous limestone: Pecos Village, N. Mex. 



1859. Productus rogersi. Meek and Hayden, Acad. Nat. Sci. Philadelphia, Proc, p. 26. 

 Upper Coal Measures: Kansas River Valley, below mouth of Blue River, Kansas. 



1860. Produdus asperus. McChesney, Desc. New Spec. Pal. Foss., p. 34. 

 Coal Measures: Lasalle and Springfield, 111. 



1861. Produdus rogerd. Newberry, Ives's Colorado River Expl. Exped., p. 121. 

 Coal Measures: Pecos Village and Kansas. 



1865. Produdus asper. McChesney, Illustrations New Spec. Foss., pi. 1, figs. 7 a-b. 



1866. Strophalosia horrescens. Geinitz, Carb. und Dyas in Nebraska, p. 49. (Not ,S'. korresceyis of 



Murchison, Verneuil, and Kayser. ) 

 Coal Measures: Bellevue, Plattsmouth, Nebraska City, and Bennett's Mill, Nebr. 

 1868. Produdus nebrascensis. McChesney, Chicago Acad. Sci., Trans., vol. 1, p. 24, pi. 1, figs. 7a-b. 

 Coal Measures: Lasalle and Springfield, III. 



1872. Produdus nebrascensis. Meek, U. S. Geol. Surv. Nebraska, p. 165, pi. 2, fig. 2; pi. 4, fig. 6; pi. 



5, figs, lla-c. 

 Upper Coal Measures: Nebraska Cit)', AVyoming, Bennett's Mill, Rock Bluff, Plattsmouth, 

 Bellevue, and Omaha, Nebr. 



1873. Produdus nebrascensis. Meek and Worthen, Geol. Surv. Illinois, Rept., vol. 5, p. 569, pi. 25, fig. 8. 

 Coal Measures: Sangamon and Lasalle counties. 111. 



1875. Produdus nebrascensis. White, U. S. Geog. Geol. Surv. W. 100th Mer., Rept., vol. 4, p. 116, 



pi. 8, figs. 3a-d. (Whole volume published in 1877.) 

 Carboniferous: Camp Apache and Carrizo Creek, Maricopa County, Ariz.; Rubyville, Schell 

 Creek Range, and top of Grass Mountain, Ely Range, Nevada; Meadow Creek, south of 

 Fillmore, Utah. 



1876. Productus nebrascensis. White, Powell's Rept. Geol. Uinta Mountains, p. 90. 

 Lower Aubrey group: Confluence of Grand and Green rivers. 



1877. Productus nebrascensis. Meek, U. S. Geol. Expl. 40th Par., Rept., vol. 4, p. 65. 



1883. Productus aspersus. Hall, Rept. New York State Geol. for 1882, pi. (19) 50, figs. 5-7. 

 Coal Measures: Lasalle, 111. 



1884. Productus nebrascertsis. White, Geol. Surv. Indiana, 13th Rept., p. 122, pi. 24, figs. 7-9. 

 Coal Measures: Fountain, Vermilion, Parke, and Vigo counties, Ind. 



