282 CAKm)NIFKK()l'S FORMATIONS AND KAUNAS OK COLoKADO. 



PRODUCTUS Sowcrliy. lsi4. 



PUODUCTUS SKMIUKTICULATUS Vai'. 



1847. I'l-iifJiiHus scmireticulutus (pars). Ue Konim^k, Monotr. du Gen. I'roil. ft Clioii., p. 83, pi. 8, tigs. 

 \(i-li; pi. 9, figs, ^n-1n; pi. 10, figs. la-d. 

 t'arboniferous: Harrisville, Bagdad, Cuyahoga, Zanesville, Flint Ridge, Greensburg, and Antrim, 

 Ohio; near Louisville, Ky.; near St. Louis and St. Charles, Mo.; Leavenworth, on the Mis- 

 souri River; Long Creek, Crawfordsville, and near New Harmony, Ind. ; Sparta, 111.; Boli\ia, 

 South America. 



lS.i8. I'roduclHs semireticulatus. Hall, Geol. Snrv. Iowa, vol. 1, pt. 2, p. 637. 



1803. I'rodtictiiK sonireticii'latiifi. Davidson, Oieol. See. Londdu, (juart. Jour., vol. 19, p. 174, pi. 9, ligg. 

 20, 21. 

 Lower Carboniferous limestone: Windsor, Brookfield, Shubenacadie, East River, Bebert River, 

 ■ Minudie, Pugwasb, near Amherst, Boulardarie, Cape B]-eton, Horton Bluff, Grays River, etc.. 

 Nova Scotia. 

 1865. Producta semireticulatu. Winchell, Acad. Nat. Sci. Philadelphia, Proc, p. 115. 



Marshall gi'oup: M^eymouth, Medina County, Ohio; Orange, Cuyahoga County, Ohio. 



1868. Productus semireticulatus. Dawson, Acadian Geology, p, 296, pi, 97o, h. 



Carboniferous limestone: Windsor, Brookfield, Shubenacadie, East River, Debert River, Minu- 

 die, Pugwash, near Amherst, Boulardarie, Cape Breton, Horton Bluff, Grays River, etc., 

 Nova Scotia. 



1869. Producta semireticiilata. Winchell, Safford's Geol. Tennessee, p. 442. 

 Immediately above black shale: Manchester, Cannon County, Tenn. 



1870. Producta semiretmdata. AVinchell, Am, Phil. Soc, Proc, vol. 11, p, 249. 



Waverly group: Newark, Sciotoville, Rockville, and Vinton County, Ohio; near Shafers, 

 Venango County, Pa. 



1877. Productus semireticulatus. Hall and Whitfield, IT. S. Geol. Expl. 40th Par., Rept. , vol. 4, p. 267, 



pi, 5, .figs. 5, 6. 

 Lower Carboniferous limestone: Nortli of Snowstorm Hill, Dry Canyon, Oquirrh Mountains, 

 Utah, 



1878. Productus semiretlcukdus. Dawson, Acadian Geology, 3d ed., p. 296, figs. 97a, 976. 



1888, Productus semireticulatus. Herrick, Sci. Lab. Denison Univ., Bull., vol. 3, p. 31, pi, 1, fig. 26; 

 pi, 6, fig, 11; pi. 10, figs. 6, 6o, 



Waverly group: Licking County, Ohio, 

 1897 . Productus semireticulatus. Smith, Am. Phil. Soc, Proc, vol. 35, p, 30, 



Lower Coal Measures: White County, Ark, 



Marshall shale: Stone County, Ark, 



Fayetteville shale: Searcy County, Ark. 



Boone cliert: Searcy County, Ark. 



1899. Productus semireticulatus. Girty, LT, S, Geol. Surv., Mon., vol. 32, pt. 2, jj. 535, pi. 69, figs. Sa-d. 

 Madison limestone: Yellowstone National Park. 



1900. Productus semireticulatus. Weller, Acad, Sci. St. Louis, Trans., vol, 10, p, 70, pi. 1, figs. 5, 6. 

 Chonopectus sandstone: Burlington, Iowa. 



