PLATE XXL* 



Illustiating paper by Stuart Weller on the " Batesville Sandstone of Ar- 

 kansas," pp. 251-282. 



Figs. 1, 2 Glijphinceras sjiha^ricus 271 



1. Lateral view of an imperfect specimen. 



2. Suture. 



Figs. 3, 3a. Ort/ioccras €urel-e7isis ? 270 



3a. Transverse section showing outline and position of siphun- 

 cle. 



Figs. 4, 5. AUorisma arkansana 265 



Fig. 6. Sangidnolites? sp 268 



Figs. 7. 8. Schizodus depressus. (?) 267 



Fig. 9. Bellerophon bran nerl 269 



Drawn from a wax impression taken from a natural mold. 



Fig . 10. Bellerophon suhlxrk 269 



Fig. 11. Phillipsias^ 272 



* All the specimens figured are internal casts. 



