88 



IOWA ACADEMY OF SCIENCE 



STENNETT FAUNA. 

 Braddyville Formation. 



FORAMINIFERA 



Fusulina secalica. 

 Brachiopoda — ■ 



Ambocoelia planoconvexa. 

 Dielasma bovidens. 

 Hustedia mormoni. 

 Orthothetes robusta. 



Platte Formation. 



Productus cora. 

 Pugnax uta. 

 Seminula argentea. 

 Spirifer cameratus. 

 Gastropoda — 



Anomphalus rotulus. 



Axthozoa — 



Lophophyllum profundum. 

 Brachiopoda — 



Chonetes granulifer. 



Marginifera longispina. 



Productus cora. 

 Productus symmetricus. 

 Seminula argentea. 

 Squamularia perplexa. 



Forbes Formation, Main Ledge, and in Debris. 



FORAMINIFERA 



Fusulina secalica. 

 Anthozoa — - 



Lophophyllum profundum. 

 Crinoidea — 



Ceriocrinus hemisphericus. 



Eupachycrinus tuberculatus. 



Hydreionocrinus mucrospinus. 



ECHINOIDEA 



Archaeocidaris agassizi. 

 Archaeocidaris dininni. 

 Archaeocidaris hallanus. 

 Archaeocidaris triserrata. 

 Bryozoa— 



Fenestella tenax. 

 Fistulipora nodulifera. 

 Polypora submarginata. 



Marginifera longispina. 

 Meekella striatocostata. 

 Productus cora. 

 Productus costatus. 

 Productus nebrascensis. 

 Productus semireticulatus. 

 Pugnax uta. 

 Rhipidomella pecosi. 

 Seminula argentea. 

 Spirifer cameratus. 

 Spiriferina kentuckiensis. 

 Squamularia perplexa. 

 Pelecypoda — 



Allorisma terminale. 

 Chaenomya minnehaha. 

 Myalina swallovi. 

 Schizodus wheeleri. 



Rhombopora lepidodendroides. Gastkopoda- 



Septopora biserialis. 

 Brachiopoda — 



Ambocoelia planoconvexa. 

 Chonetes granulifer. 

 Chonetes verneuilana. 

 Dielasma bovidens. 

 Enteletes hemiplicata. 

 Hustedia mormoni. 



The writer in the past has used the nomenclature of Grabau 

 and Shinier in "North American Index Fossils." However, 

 certain changes should be made, as some of the specific names 

 used are synonyms. 



Bellerophon percarinatus. 

 Euomphalus catilloides. 

 Euphemus carbonarius. 

 Platyceras parvum. 

 Soleniscus intercalaris. 

 Cephalopoda — 



Orthoceras knoxense. 



