PLATE XXVIII. 



Page. 



G ASTRiocERAs ExcELsi'M Meek - " !^B 



Specimen No. G226, paleontologic collection, AValker Museum, University of Chicago. 



Upper Coal Pleasures, Osage, Kans. 

 Fig. 1. Side view, natural size. 

 Fig. 2. Septa, natural size, traced from the specimen. 



Note. — Photograjili luaned hy Dr. Stuart Weller, University of Chii;ago. 



204 



