414 OAKBOKIFEROUS FORMATIONS AND KAUNAS OF COLORADO. 



PELECYPODA. 



AVICULOPECTEN McCoy, 1851. 

 AvicuLOPECTEN occiDENTALis Shumai'd. 



PI. VIII, fig. 1. ^ 



185.5. Pecten occidentalis. Shiimard, Missouri Geol. Surv., p. 207, pi. C, fig. 18. 



Coal Measures: Near Plattsburg, Clinton County, Mo. 

 1858. Pecten deai-elandicus. Swallow, Acad. Sci. St. Louis, Trans., vol. 1, p. 184. 



Permian: Valley of South Cottonwood, Kansas. 

 1861. Peden occidentalis. Newberry, Ives's Colorado River Expl. Exped., p. 128. 



Coal Measures: Banks of the Stranger, above Easton, Kans. 



1864. Avicidopeden ? Meek and Hayden, Smithsonian Cont. Knowledge, vol. 14, No. 192, p. 50, 



pi. 2, fig. 10. 



Permian: Near Chapman's Creek, 18 miles above Fort Riley, Kans. 

 1866. Avicidopecten occidentalis. Meek and Worthen, Geol. Surv. Illinois, Rept. ,vol. 2, p. 331, pi. 27, 

 figs. 4, 5, 5a. 



Upper Coal Measures: Saline Creek, Gallatin County, 111. 

 1866. Pecten missouriensist Geinitz, Carb. und Dyas in Nebraska, p. 35, tab. 2, fig. 18. 



Upper Coal Measures: Nebraska City, Nebr. 

 1872. Aviculopecten occidentalis. Meek, U. S. Geol. Surv. Nebraska, p. 191, pi. 9, fig. 10. 



Upper Coal Measures: Rock Bluff, Bennett's Mill, Wyoming, and Nebraska City, Nebr.; Illi- 

 nois, Missouri, Iowa, Kansas, Kentucky. 



Coai Measures: Black Hills, Dakota. 



1876. Avicidopecten occidentalis. White, Powell's Rept. Geol. Uinta Mountains, p. 90. 

 Lower Aubrey group: 2 miles above Belleview, Utah. 



1877. Aviculopecten occidentalis. White, U. S. Geog. Geol. Suxv. W. 100th Mer., Rept., vol. 4, p. 146, 



pi. 12, figs. 8a, b. 



Carboniferouf: Camp Apache, Ariz. 

 1884. Avicidopecten occidentalis. White, Geol. Surv. Indiana, 13th Rept., p. 143, pi. 28, fig. 2. 



Coal Measures: Pike and Gibson counties, Ind. 

 1886. Aviculopecten occidentalis. Heilprin, 2d Geol. Surv. Pennsylvania, Ann. Rept. for 1885, p. 455, 

 fig. 5a, p. 442, fig. 5. 



Upper Coal Measures: Mill Creek limestone, Wilkesbarre, Pa. 

 1886. Avindopecten occidentalis. Heilprin, Proc. and Coll. AVyoming Hist, and Geol. Soc, vol. 2, pt. 

 2, p. 270, fig. 5, p. 271, fig. 5a. 



Upper Coal Measures: Mill Creek limestone, Wilkesbarre, Pa. 

 1891. Aviculopecten occidentalis. White, U. S. Geol. Surv., Bull. No. 77, p. 29, pi. 4, fig. 1. 



Permian: Military Crossing, Baylor County, Tex. 

 1894. Aviculopecten occidentalis. Keyes, Missouri Geol. Surv., vol. 5, p. 110, pi. 42, fig. 3. 



Upper Coal Measures: Plattsburg and Kansas City, Mo. 

 1897. Aviculopecten occidentalis. Smith, Am. Phil. Soc, Proc, vol. 35, p. 34. 



Lower Coal Measures: Conway County, Ark. 



