436 GEOLOGY OF OHIO. 



Ancyrocrinus Hall. 

 A. spinoius Hall. 

 MOLXUSCA. 

 BRYGZOA Emmerich. 

 Stictopora Hall. 



6". Gilberti Meek. 



IylCHENAEIA Hall. 



L. lichenoides Meek. 

 BRACHIOPODA. 



Discina Lamarck. 



D. grandis Vanux.? 

 Crania Retzius. 



C. crenistriata Hall. 



C. HamiltonicB Hall. 

 Orthis Dalman. 



O. Livia Bill. 



O. propinqua Hall. 



O. Vanuxemi Hall. 

 Streptorhynchus King. 



S. flab e Hum Whitf. 



6". pandora Bill. 

 Strophodonta Hall. 



6". ampla Hall. 



■5". demissa Conrad. 



5". hemispherica Hall. 



kS. ineqiiiradiata Hall. 



►S. nacre a Hall. 



►S. *Patersoni Hall. 



.S". perpla?ia Conrad. 



vS. subdemissa Hall.? 

 Strophomexa Rafinesque. 



5". rhomboidalis Wilck. 

 Chonetes Fischer. 



C. acutiradiata Hall. 



C. arcuata Hall. 



C. deflect a Hall. 

 . C. mucronata Hall.? 



C. Yande liana Hall. 

 Productella Hall. 



P. spmulicosta Hall. 

 Spirifera Sowerby. 



J5. acuminata Con. 



vS. duodenaria Hall. 



»S. euruteines Owen. 



6". fimbria' a Con. 



