Fauna of the Morrow Group 
161 
Marshall shale: Independence and Stone Counties, Arkansas. 
Fayetteville shale: Independence County, Arkansas. 
1899. Productus laevicostus. Girty, Mon., U. S. Geol. Surv., No. 32. p. 
534, pi. 69, figs. 9a-c. 
Madison limestone: Many localities, Yellowstone National Park. 
1900. Productus cora. Beede, Univ. Geol. Surv. Kans., vol. 6, p. 75, pi. 11, 
figs. 1-lf. 
Upper Coal Measures: Kansas City, Eudora, Lawrence, Lecomp- 
ton, Topeka, Grary County, Melvern, Osage County, Kansas. 
1900. Productus laevicostus. Weller, Trans. St. Louis Acad. Sci., vol. 10, 
p. 71, pi: 1, figs. 1, 2. 
Chonopectus sandstone: Burlington, Iowa. 
1903. Productus laevicosta. Girty, Prof. Paper, U. S. Geol. Surv., No. 16, 
p. 284. 
Ouray limestone: San Juan region, Colorado. 
1903. Productus cora. Girty, Prof. Paper, U. S. Geol. Surv., No. 16, p. 
364, pi. 4, figs. l-4b. 
Hermosa formation: San Juan region; Ouray, Colorado. 
Rico formation: San Juan region, Colorado. 
Weber limestone and Maroon formation: Crested Butte District; 
Leadville District, Colorado. 
1903. Productus cora. Paleontologia Universalis, Fasc. 1, 2. 
1909. Productus pileiformis. Girty, Bull., U. S. Geol. Surv., No. 377, p. 
26, pi. 2, fig. 7. 
Caney shale: McAlester quadrangle, Oklahoma. 
1909. Productus cora. Girty, Bull., U. S. Geol. Surv., No. 389, p. 58, 
Manzano group, Abo sandstone: Mesa del Yeso, Abo Canyon, and 
Sandia Mountains, New Mexico. 
1911. Productus pileiformis. Girty, Bull., U. S. Geol. Surv., No. 439, p. 44, 
pi. 4, figs. 1, 2. 
Moqrefield shale: Spring Creek, Batesville quadrangle, and Mar- 
shall, Marshall quadrangle, Arkansas. 
1911. Productus pileiformis. Morse, Proc. Ohio State Acad. Sci,, vol. 5, 
p. 370, figs, 8a-c. 
Maxville limestone, Upper Zone: Mouth of Buckeye Fork, Fulton- 
ham; Gladstone Mills, Thompson Residence, below Thompson 
Residence, White Cottage, Ohio. 
Lower Zone: Cut No. 4, Mount Perry, Fultonham, Fold Quarry, 
Rushville, Ohio. 
1911. Productus laevicostus. Beede, N. Y. State Museum, Bull. No. 149, 
p. 163. 
Mississippian: Magdalen Islands, Quebec, Cape le Trou, Grind- 
stone Island. 
1912. Productus cora. Boutwell, Prof. Paper, U. S. Geol. Surv., No. 77, 
p. 48, pi. 6, figs. l-2a. 
Limestone in Weber quartzite: Near Park City district, Utah. 
