168 KANSAS UNIVERSITY SCIENCE BULLETIN. 



Hustedia mormoni (Marcou) Hall and Clarke. 

 Meekella striaticostata (Cox) White and St. John. 

 Orbiculoidea missouriensis (Shumard) Hall and Clarke. 

 Productus cora d'Orbigny. 

 Productus costatus Sowerby? de Koninck. 

 Productus longispinus Sowerby ? 

 Productus nebraskensis Owen. 

 Productus pertenuis Meek. 

 Productus punctat us (Martin) Morton. 

 Productus semireticulatus (Martin) d'Orbigny. 

 Reticularia perplexa ( McChesney) Schuchert. 

 Seminula argentia (Shepard) Hall and Clarke. 

 Spirifer earner atus Morton. 

 Spiriferina cristata ( Schlotheim) Dawson. 

 Allorisma granosum (Shumard) Keyes. 

 Allorisma subcuneatum Meek and Hay den. 

 Astartella vera Hall. 



Aviculopectcn occidentalis (Shumard) Meek and Hayden. 

 Entolium aviculatum ( Swallow) Meek. 

 Limopteria marian ( White) Beede ? 

 Macrodon Cf. tenuistriatus Meek and Worthen. 

 Macrodon sp. 



Myalina sivallowi McChesney. 

 Pinna per acuta Shumard. 

 Schizodus curtus Meek and Worthen. 

 Schizodus curtiformis Wolcott. 

 Schizodus rossicus de Verne uil. 



Aclisina swalloviana (Geinitz) Meek, and other gastropods too 

 poorly preserved to be identified. 

 Bellerophon carbonarius Cox. 

 Orthoceras sp. 

 Griffithides scitula (Meek and Worthen) Vogdes. 



26. Sever y Shales. These shales are blue below, varying 

 through yellow to black in places above the coal. They are 

 fifty to seventy-five feet in thickness. The texture varies, and 

 in the upper part they contain the Osage coal, which is mined 

 at Topeka, Burlingame, Osage City, and other places. 



In correlating isolated sections the rocks between the Topeka 

 limestone and the Barclay ( = Burlingame = Wyckoff, etc.) lime, 

 stone have been somewhat confused. Under the title, " Stratig- 



