POLYZOANS. 31 



Thamniscus furcillatus ULRICH. 



Plate xxxiii, fig. 6. 



Thamniscus furcillatus Ulrich, 1890 : Geol. Sur. Illinois, vol. VIII, p. 609, 

 pi. Ixii, figs. 9-9b. 



Horizon and localities Lower Carboniferous, Kaskaskia 

 limestone : Ste. Genevieve. 



Pinnatopora youngi ULRICH. 



Pinnatopora youngi Ulrich, 1890 : Geol. Sur. Illinois, vol. VIII, p. 615, pi. 

 Ixvi, fig. 3. 



Horizon and localities. Lower Carboniferous, Keokuk 

 limestone: Keokuk (Iowa). 



Pinnatopora vinei ULRICH. 



Pinnatopora vinei Ulrich, 1890: Geol. Sur. Illinois, vol. VIII, p. 616, pi. 

 Ixvi, figs. 5-5b. 



Horizon and localities. Lower Carboniferous, Keokuk 

 limestone: Keokuk (Iowa). 



Pinnatopora conferta ULRICH. 



Pinnatopora conferta Ulrich, 1890: Geol. Sur. Illinois, vol. VIII, p 618, 

 pi. Ivi, fig. 5. 



Horizon and localities. Lower Carboniferous, Keokuk 

 limestone : Keokuk ( Iowa ). 



Pinnatopora trilineata (M.EEK). 



Olauconome trilineata Meek. 1872: U. S. Geol. Sur. Nebraska, p. 157, pi. 



vii, figs. 4b-d. 

 Pinnatopora trilineata Ulrich, 1890 : Geol. Sur. Illinois, vol. VIII, p. 620, 



pi. Ixvi, fig. 6. 



Horizon and localities- Upper Carboniferous. Upper Coal 

 Measures : Kansas City. 



Ptilopora acuta ULRICH. 



Ptilopora acuta Ulrich, 1890: Geol. Sur. Illinois, vol. VIII, p. 622, pi. 

 Ixv, figs. 4-4 a. 



Horizon and localities Lower Carboniferous, Keokuk 

 limestone: Keoknk (Iowa). 



