78 BRA.CHIOPODS. 



Spirifera subrotundata HALL. 



Spirifer subrotundatus Kill, 1858: Geology Iowa, vol. I, p. 521, pi. vii r 

 figs. 8a-b. 



Rather below medium size, gibbous, subglobose; hinge- 

 line shorter than greatest width of shell, cardinal extremities 

 rounded. Surface marked like 8. grimesi. 



Horizon and localities. Lower Carboniferous, Ohouteau 

 (Kinderhook) limestone : Sedalia. 



Spirifera taneyensis SWALLOW. 



Spirifer taneyensis Swallow, 1860: Trans. St. Louis Acad. Sci., vol. I, 

 p. 645. 



A small, gibbous, submucronate shell with large plications,, 

 about ten in number. 



Horizon and localities. Lower Carboniferous, Kinder- 

 hook beds : Taney county, according to Swallow. 



Spirifera cooperensis SWALLOW. 

 Spirifer cooperensis Swallow, 1860 : Trans. St. Louis Acad. Sci., vol.1, p. 



643. 

 Spirifer cooperensis Meek & Worthen, 1866 : Geol. Sur. Illinois, vol. II, p. 



155, pi. xiv, figs. 5a-b. 



A small, Athyris-like form, resembling the common 8. per- 

 plexa from the Coal Measures, but hiving obscure radiating 

 folds. 



Horizon and localities. Lower Carboniferous, Choutean 

 (Kinderhook) limestone : Chouteau Springs (Cooper county ) 



Spirifera marionensis SHUMARD. 



Spirifer marionensis Shumard, 1855: Geol. Sur. Missouri, Ann. Rep., p. 



203, pi. C, figs. 8a-b. 

 Spirifer marionensis Hall, 1858: Geology Iowa, vol. I, p. 511, pi. vi, figs. 



la-c. 

 Spirifer osagenns Swallow, 1860: Trans. St. Louis Acad. Sci. , vol. I, p. 



641. 

 Spirifer missouriensis Swallow, 1860: Trans. St. Louis Acad. Sci , vol. I. 



p. 643. 

 Spirifer vernonensis Swallow, 1860 : Trans. St. Louis Acid. Sci. . vol. I, p. 



644. 

 Spirifer ozarkensis Swallow, 1860: Trans. St. Louis Acad. Sci., vol. I, 



p. 644. 



