416 GEOLOGY OP OHIO. 



CEPTTAT,OPODS OR CHAMBERED SHELLS. 



Oyrtooeras — undetermined sp. 



Ortlioceras Jamesi — H. and W. 



Orthoceras — undetermined sp. 



ARTICULATES. 



TKILOBITES. 



Galymene — undetermined sp. 



Illaenus Daytonensis H. and W. 



lUaenus — undetermined sp. 

 Proetus — undetermined sp. 



FOSSILS OF THE NIAGARA GROUP. 



GBAPTOLITES. 



Inocaulis bella ...H. andW. 



rORAMlNIEERA. 



Eeceptaoulites infundilonliformis Hall. 



" Ohioensis H. andW. 



SPONGES. 



Astylospongi'a — undetermined sj). 



COKALS AND BRTOZOABTS. 



Astrocerinm Tenustum? Hall, 



Chonophyllum — undetermined sp*. 



Cladopora reticulata? ., Hall. 



Favosites Gothlandica Lam. 



" Niagarensis H&ll. 



Penestella nervata Nich, 



Halysites catenularia .- Lin. 



" " var. maoropora Whitf. 



Ptilodictya — undetermined sp. 



Strombodes Scbweiggeri E. and H. 



" striatus D'Orb. 



Syringopora Danes ...Bill. 



" — undetermined sp. 



CEmOIDS AND CYSTIDEAKS. 



Apiocystites imago Hall. 



Caryoorinus ornatus Say. 



Cyathocrinus pisiTormia Eoemer. 



