158 
Kirtley F. Mather 
1848. Productus Martini. Christy, Letters on GeoL, pi. 5, figs. 6, 8, 9. 
Pinckneyville, Illinois. 
1852. Productus semireticulatus. Hall, Stansb. Exped. Gt. Salt Lake, p. 
411, pi. 3, figs. 3, 5a, b. 
Carboniferous: Near Fort Laramie; and Flat Rock Point and other 
places in the neighborhood of Great Salt Lake, Utah. 
1852. Productus cora. Owen, Geol. Rep. Wis., Iowa, and Minn., tab. 5, 
fig. 1. 
Carboniferous: Missouri River, below mouth of Little Platte River. 
1852. Productus cora. Roemer, Kreid. von Texas, p. 90. 
Carboniferous: San Saba Valley, Texas. 
1854. Productus cora. Marcy’s Explor. Red River of La., p. 175. 
Carboniferous: Washington and Crawford Counties, Arkansas. 
1855. Productus cora. Norwood and Pratten, Jour. Acad. Nat. Sci., 
Phil., 2nd Ser., vol. 3, p. 6. 
Mountain limestone: Chester, Rosiclare, and Warsaw, Illinois; 
near Richmond, Missouri; Carrsville, Kentucky. 
1855. Productus Prattenianus. Norwood, Jour. Acad. Nat. Sci., Phil., 
2nd Ser., vol. 3, p. 17, pi. 1, figs. lOa-d. 
Coal Measures: Crossing of Big Nemahaw River, about 85 miles 
northwest of St. Joseph, Missouri. 
1855. Productus cora. Salter, Belcher’s “Last of the Arctic Voyages,” p. 
387, pi. 36, fig. 12. 
Carboniferous: Top of Exmouth Island. 
1858. Productus cora. Marcou, Geol. N. A., p. 45, pL 6, figs. 4, 4a. 
Mountain limestone: Tigeras Canyon of San Antonio; Pecos Vil- 
lage; summit of Sierra de Sandia, New Mexico. 
1858’. Productus ovatus. Hall, Geol. Iowa, vol. 1, pt. 2, p. 674, pi. 24, 
fig. 1. 
St. Louis limestone : Ottumwa and Keosauqua, Iowa ; St. Louis, 
Missouri. 
1859. Productus Prattenianus. Meek and Hayden, Proc. Acad. Nat. Sci., 
Phil., p. 26. 
Coal Measures: Indian Creek and Leavenworth, Kansas. 
1859. Productus pileiformis. McChesney, Desc. New Pal. Foss., p. 40. 
Kaskaskia limestone: Chester, Illinois. 
1860. Productus laevicostus. White, Jour. Boston Soc. Nat. Hist., vol. 
7, p. 230. 
Burlington limestone: Burlington, Iowa. 
1863. Productus coraeformis. Swallow, Trans. St. Louis Acad. Sci., vol. 
2, p. 94. 
Archimedes limestone: Cooper County, Missouri. 
1863. Productus cora. Davidson, Quart. Jour. Geol. Soc. London, vol. 19, 
p, 174, pi. 9, figs. 22, 23. 
Lower Carboniferous limestone: Windsor, Horton Bluff, Shubena- 
cadie. Gays River, Cape Breton, Pugwash, eastward of Cumber- 
