University Geological Survey of Kansas 



Volume VI. Plate XII. 



AULACORHYNCH TS. 1. 

 CLEIOTHYRIS 2. 

 HL.sTEDlA. 3. 



reticllaria. 4. 

 spirifer. 5. 

 ENTELETES 



Z^ 



& 



~ 







PUQNAX, T, ^. 





MEEK ELLA. 'X 





DERBYA, 10. 





