PLATE XVI. 



Fig. 1. Sphenotus valvdlus, Hall 014 



Upper part of Cuy ihoga shale 30 feet below conglomerate I. 

 Fig. "2. ProThyriS meeki, Hall. 



Kinderhook, Shales below conglomerate II 



Fig. 3. Ctknodonta houghtoni, Stevens. 



Cuyahoga shale.' 

 Fig. 4. Pai„£oneii,0 curta, Herrick. 



Kinderhook Freestone, Granville. 



Fig. 5. ' Dexiobia ovaTa, Hall. 



Kinderhook, near conglomerate II, Newark. 

 Fig. 6. Oracardia cornota, Herrick. 



Cuyahoga shale, "Waverly shale" below conglomerate I. 

 Fig. 7. Dexiobia ovata, Hall. 



Kir.derhook, Gann 



Figs. 8-10. Oracardia cornuta, Herrick. 



Kinderhook Freestone, Granville. 



NUCULANA sp. 

 Kitiderhook, near conglomerate II, Gann. 



NrjCUtANA sp. 

 Kindt rnook, Granville. 



Nuculana simius, Herrick. 

 Below conglomerate I. 



Pai^oneilo consimilis, Herrick. 



Base of Cuyahoga shale, Harlem, Delaware county 



PA^^ONEltO IGNOTA, Herrick. 

 Cuyahoga shale, Moot's run. 



Nuculana saccaTa, Winchell. 

 "Waverly shale," below conglomerate I. 



Pal>Eoneii,o sulcatina, Conrad. 

 Cuyahoga shale. 

 Pal^oneilo (?) marshaixensis, Winchell. 



This specimen is Jrom the upper parts of the Wav rly but is found throughout 

 the series with no obvious differences. It seems to be identical with Hall's 

 Palseoneilo truncata and Winchell's Sanguinolites niarshalieusis. 



Macrodon newarkensis, Herrick. 



Burlington and Keokuk, Newark. O. 



SPATHELI.A VENTRICOSA, Hall. 

 Keokuk. Freestone at Granville O. 



Mytiiarca fibristriata, W. and W. 



Cuyahoga shale. Moot's run. 



NUCU1.ANA DIVERSAH (?). 

 Peninsula O. 



NUCUXANA NUCUL^FORMIS, Stevens (?). 

 Burlington, Newark, O 



