Fauna of the Morrow Group 
173 
1878. Productus sp. allied to P. punctatus. Etheridge^ Quart. Jour. Geol. 
Soc. London, voL 34, p. 630. 
Carboniferous: Feilden Isthmus, latitude 82° 43'. 
1882. Productus punctatus. White, 11th Rep. Geol. Surv. Ind., p. 373, pi. 
42, figs. 1“3. 
Coal Measures: Newport, Indiana. 
1883. Productus punctatus. Hall, Rep. N. Y. State Geol., for 1882, pi. (19) 
50, figs. 14H6. 
1883. Productus Rogersi. Hall, Rep. N. Y. State GeoL, for 1882, pi. (19) 
50, figs. 17, 18. 
Coal Measures. • 
1884, Productus punctatus. White, 13th Rep. Geol. Surv. Ind., p. 124, pi. 
27, figs. 1~3. 
Coal Measures: Vermilion, Vigo, Sullivan, Vanderberg, Dubois, 
Warrick, and Pike Counties, Indiana. 
1887. Productus punctatus. Herrick, Bull. Sci. Lab. Den. Univ., vol, 2, 
p. 48, pi. 2, fig. 29. 
Coal Measures: Flint Ridge, Ohio. 
1892, Productus punctatus. Hall and Clarke, Int. to Study of Brach., pt. 
1, pi. 22, figs. 9, 10. 
Coal Measures: Mississippi Valley. 
1892. Productus punctatus. Hall and Clarke, Pal. N. Y., vol. 8, pt. 1, pi. 
17A, fig. 21; pi. 19, figs. 14H7. 
Upper Coal Measures: Near Kansas City, Missouri; Missouri. 
1894. Productus punctatus. Keyes, Mo. Geol. Surv., vol. 5, p. 51, pi. 37, 
figs. la-c. 
Upper Coal Measures: Kansas City, Missouri. 
1897. Productus punctatus. Smith, Proc. Am. Phil. Soc., vol. 35, p. 29, 
pi. 22, fig. 7. 
Lower Coal Measures: Conway County, Arkansas. 
1900. Productus punctatus. Beede, Univ. Geol. Surv. Kans., vol. 6, p. 8’7, 
pi. 10, figs. 3“3e; pi. 11, fig. 3. 
Upper Coal Measures: Kansas City, Turner, Lawrence, Lecomp- 
ton, Topeka, and Moline, Kansas. 
1903. Productus punctatus. Girty, Prof. Paper, U. S. Geol. Surv., No. 
16, p. 368. 
Hermosa formation, middle and upper portion: San Juan region, 
Colorado. 
Numerous specimens from the Morrow group evidently belong 
to the group of Producti which has been frequently described 
from the Pennsylvanian of North America and referred to Mar- 
tinis species. The material at hand probably could not be dif- 
ferentiated from the common Lower Coal Measures type. It is, 
however, doubtful whether any of these forms are true P. punc- 
tata~ as Martinis figures seem to agree much more closely with 
