Art. II.] Bownocker, Corniferoiis Rocks of Ohio 23 
it unsuitable for lime, but it is a fine stone for building pur- 
poses, paving, and curbing. 
The following fauna was collected in the Campbell quarry, 
adjacent to the C. H. V. & T. station : 
Anthozoa. Cyathophyllum halli (?), Favosites sp., Hadro- 
phyllum, d’orbignyi. E. & H. 
Brachiopoda. Lingula manni. H.. Ambocoelia umbonata. 
Con., Chonetes yandelanus. H., Leiorhynchus limitaris. Van., 
Leptaena rhomboidalis. Wilck. , Meristella nasuta. Con., Rhi- 
pidomella livia. Bill., Schizophoria propinqua. H., Spirifera 
acuminata. Con., Spirifera duodenaria (?) H., Spirifera ziczac. 
H., Stropheodonta hemispherica. H., Stropheodonta inequira- 
diata. H., Stropheodonta perplana (?) Con. 
Lamellibranchiata. Aviculopecten parilis. Con., Glypto- 
desma erecta. Con., Grammysia bisulcata. Con. 
Ft^ropoda. Tentaculites scalariformis. H. 
Gastropoda. Platyceras bucculentum (?) H. 
Cephalopoda. Gyroceras ohioense. N. 
This fauna is small and manifestly different from that found 
at the localities already- given, all of which lay below the bone- 
bed. Species that are found here for the first time in this study 
are Lingula manni y Leiorhynchus limitaris y Grammysia bisidcatay 
Aviculopecten parilisy Tentaculites scalariformis y and Gryoceras 
ohioense. Further, two of these species, L. limitaris y and T. 
scalariformis y are among the most common found. Worthy of 
note is Spirifera ziczaCy which is rare below the bone-bed, but 
very abundant here. 
Many of the common genera below the bone-bed are here 
absent, — Aulacophyllumy CystiphyllmUy Eiidophyllumy ZaphrentiSy 
Conocardiumy ParacyclaSy Callonemay EuomphaluSy Loxonemay 
Ortho ceraSy ProetuSy and Phacops. 
Farther north at Marion and Sandusky several of these 
genera appear and the fauna more closely resembles that found 
below the bone-bed. There are several well marked faunal 
zones at this point. Those which have been definitely located 
are shown on the section, Plate IV These zones, as there 
shown, are composed of two or three species, and these it may 
