OiSIYCH. 



496 



Onychocrinus exsculptus. 



(Lyon & Oasseday, 1860, 

 Am. Jour. Sci. 

 Vol. 29, p. 78.) 

 CoUett's Indi- 

 ana Report of 

 1881, p. 365, pi. 

 40, fig. 1, natU' 

 ral size J side 

 view of a par- 

 tially crushed, 

 imperfect head 

 of stone - lily, 

 with broken 

 arms and stems. 



— Subcarboni- 

 ferous( Keokuk 

 limestone) for- 

 mation. JT/. 



)7id.lS81.t^ Pl3i^ii Pl-4^ 



