Art. II.] Bownocker, Comiferous Rocks of Ohio 2 1 
Cephalopoda. Gomphoceras sciotoense. Whit., Gyroceras 
columbiense. Whit., Orthoceras ohioense. 
Crustacea. Proetus crassimarginatus. H. 
The formation at this locality is quite highly fossiliferous. 
The species found here and at Marble Cliff, which lies about 
three miles north, comprise the great body of the Comiferous 
forms of this state. However, these species are almost all 
found at other localities. 
Immediately below the bone-bed is found a narrow faun- 
al zone characterized by Platyceras dumosum. Below, but close 
to the above, is a well marked zone of Spirifera acuminata. 
About three feet below the bone-bed occurs a prominent zone 
of Efidophylhim verneuilanum. This attains a thickness of 2 feet. 
It is interesting to note that Leptaena rho 7 nboidalis and 
Atrypa aspei^a, both common species at most localities, have 
not been found south of this place, and that the same is true of 
the ce'phalopods. 
Crinoids and blastoids are more common here than else- 
where in Ohio. About 100 codasters were picked up in Green 
Lawn Cemetery in a few hundred feet of red clay that had been 
stripped from the underlying rock. 
This locality is perhaps the best in the state for collecting 
corals. 
DUBLIN. 
This is located about ten miles north of Marble Cliff. 
There are two quarries, one on each side of the river, but both 
are small. The rock is burned for lime on a small scale. The 
depth of the exposed sections was not determined with precis- 
ion, but is probably not far from 25 feet. The following species 
were collected: 
Spongia. Stromatopora sp. 
Anthozoa. Favosites emmonsii. Rom., Favosites hemi- 
sphericus. Troost., Zaphrentis gigantea. Leseur., Zaphrentis 
prolifica. Bill. 
Blastoidea. Codaster pyramidatis, Shum. 
Bi^achiopoda. Atrypa aspera. Schloth. , Atrypa reticularis. 
Linn., Cyrtina hamiltonensis. H., Rhipidomella livia. Bill, 
