160 
Kirtley F. Mather 
Lower Carboniferous limestone: North of Snowstorm Hill, Dry 
Canyon, Oquirrh Mountains, Utah. 
1883. Productus ovatus. Hall, 2nd Ann. Rep. N. Y. State GeoL, for 1882, 
pi. (18) 49, fig. 19. 
Keokuk limestone: New Providence, Indiana. 
18’84. Productus Cora. White, 13th Rep. Geol. Surv. Ind., p. 126, pi. 26, 
figs. 1-3. 
Coal Measures: Fountain, Vermilion, Parke, Montgomery, Clay, 
Owen, Pike, Dubois, and Warrick Counties, Indiana. 
1886. Productus Cora. Heilprin, 2nd Geol. Surv. Penn., Ann. Rep. 1885, 
p. 452; p. 440, figs. 1, la. 
Mill Creek limestone. Upper Coal Measures: Wilkesbarre, Penn- 
sylvania. 
1886. Productus Cora. Heilprin, Proc. and Coll. Wyo. Hist, and Geol. Soc., 
vol. 2, pt. 2, p. 268", figs. 1, la. 
Mill Creek limestone. Upper Coal Measures: Wilkesbarre, Penn- 
sylvania. 
1887. Productus Cora. Herrick, Bull. Sci. Lab. Den. Univ., vol. 2, p. 47, 
pi. 2, fig. 26. 
Coal Measures: Flint Ridge, Ohio. 
1888. Productus cora. Keyes, Proc. Acad. Nat. Sci., Phil., p. 227. 
Lower Coal Measures: Des Moines, Iowa. 
1891. Productus pileiformis. Whitfield, Ann. N. Y. Acad. Sci., vol. 5, p. 
582, pi. 13, figs. 13, 14. 
Maxville limestone: Ohio. 
1892. Productus sp? cf. Prattenianus. Hall and Clarke, Pal. N. Y., vol. 
8, pt. 1, pi. 18’, fig. 4. 
Waverly sandstone: Newark, Ohio. 
1892. Productus ovatus. Hall and Clarke, Pal. N. Y., vol. 8, pt. 1, pi. 18, 
fig. 19. 
Keokuk limestone: New Providence, Indiana. 
1894. Productus laevicostus. Keyes, Mo, Geol. Surv., vol. 5, p. 41, pi. 38, 
fig. 1. 
Kinderhook group: Louisiana, Missouri. 
Burlington group: Louisiana, Missouri. 
1894. Productus ovatus. Keyes, Mo. Geol. Surv., vol. 5, p. 44. 
St. Louis limestone: St. Louis, Missouri. 
1894. Productus cora. Keyes, Mo. Geol. Surv., vol. 5, p. 47, pi. 37, 
figs. 2a“C. 
Coal Measures: Calhoun and Kansas City, Missouri. 
1895. Productus pileiformis. Whitfield, Geol. Surv. Ohio, vol. 7, p. 470, 
pi. 9, figs. 13, 14. 
Maxville limestone: Ohio. 
1897. Productus cora. Smith, Proc. Am. Phil. Soc., vol. 35, p. 28. 
Upper Coal Measures: Poteau Mountains, Indian Territory. 
Archimedes limestone: Independence County, Arkansas. 
