The Fauna of the Maxville Limestone. 377 



ments of the smaller shells may be readily separated from 

 Seminula suhquadrata and Dielasnia turgida by the absence of 

 the round foramen and from the latter also by the absence of the 

 punctate surface. 



Horizon and locality. ■ — • Maxville limestone. 

 Upper zone: Alouth of Buckeye Fork, Fultonham; Gladstone 



Mills, Thompson Residence, Below Thompson Residence^ 



White Cottage. 



SPIRIFER KEOKUK— Hall. 



1852. Spirifer atfeiniatus. Owen, Geol. Rep.- Wis., Iowa, and Minn.,, 

 tab. 5, fig. 5, tab. 3 A, fig. 18. 

 Lower Carboniferous limestone : Skunk River, Iowa. 

 Carboniferous limestone : Keokuk Rapids of the Mississippi. 

 1858. Spirifer keokuk. Hal!, Geol. Iowa, Vol. I, pt. II, p. 642, pi. 20„ 

 figs. 3 a-d, 2d. 

 Keokuk limestone : Keokuk, Iowa ; Nauvoo and Warsaw, Illinois. 

 1858. Spirifer keokuk var. Hall, Geol. Iowa, Vol. I, pt. II, p. 676, pi. 24,, 

 figs. 4 a-d. 

 St. Louis limestone: Mouth of Lizard Creek, Iowa. 

 1876. Spirifer keokuk (?) Meek, Bull. U. S. Geol. and Geog. Surv., 

 Terr., Vol. II, p. 355, pi. 1, figs. 3, 3a. 

 Carboniferous: Kootenay Range of Rocky Mountain. 

 1883. Spirifera keokuk. Hall, Rep. N. Y. State Geol. for 1882, pi. (30) 

 55, figs. 21-24. 

 Keokuk and St. Louis limestone : Keokuk, Lizard Creek, and 

 Marion County, Iowa. 

 1888. Spirifer keokuk. Herrick, Bull. Denison Univ., 'Vol. IV, p. 114. 



Waverly group : Rushville and Loudonville, Ohio. 

 1888. Spirifer incrcbescens. Herrick, Bull. Denison LTniv., Vol. IV, pi. 

 11, figs. 14, 23. 

 Chester limestone : Ohio. 



Limestone fragments in Coal Measures : Licking County, Ohio. 

 1891. Shirifer Rockymoiitauaf Whitfield, Ann. N. Y. Acad. Sci., Vol.. 

 V, p. 584, pi. 13, fig. 20. 

 Maxville limestone : Newtonville, Ohio. 

 1894. Spirifer keokuk. Hall and Clarke, Int. Study of Brach., pt. 2,. 

 pi. 27, figs. 14, 15. 

 Keokuk group : Keokuk, Iowa. 

 1894. Spirifera keokuk. Keyes, Mo. Geol. Surv., Vol. V, p. 81, pi. 40,. 

 fig. 2. 

 Keokuk limestone : Wavland, Missouri ; Keokuk, Iowa. 



