1884.] 495 [Clay pole. 
Lower Shale. 
Omitting the lower shale, in consequence of the scarcity of its fossils so 
far obtained, and the fact that there is no question of its affinity, I pass on 
to the next member of the series ascending. 
Tron Sandstone and Block Ore. 
The Iron sandstone is in some places very fossiliferous, and, aside from. 
the fossils which relate to my present purpose, has yielded me some which 
promise to be of considerable interest to paleontology. Two species, 
however, bear on the present subject. 
Beyrichia lata, Vanuxem. 
Calymene Clintoni, Vanuxem. 
Both are distinctly Clinton species described from that group in New 
York. 
Upper Green Shale. i 
The three species already recognized from this bed are 
Reyrichia lata, Vanuxem. 
Oalymene Olintoni, Vanuxem. 
Olaymene Niagarensis, Hall. 
All are Clinton species in New York, the last extending its range into 
the Niagara group also. 
Ove Sandrock. 
This rock is in many places abundantly fossiliferous. Again we find 
Beyrichia lata, Vanuxem. 
Calymene Clinton’, Vanuxem. 
Sandvein Ore Bed. 
The same evidence comes from this horizon. I have recognized 
Beyrichia lata, Van. 
Calymene Olintont, Van. 
Ormoceras vertebratum, Hall. 
Thus we find the results of a study of the fossils completely in harmony, 
so far, with those deduced from the stratigraphy. Clinton fossils range up 
to and into the Sandvein ore bed. 
On the other hand in all these beds I have not yet found a single speci- 
men belonging to any other horizon. Negative evidence is therefore con- 
firmatory. We have consequently paleontological evidence, at present 
scanty, it is true, but unmistakable, of the persistence of the typical Clinton 
fauna of New York up to and through the Sandvein ore bed. 
