The Fauna of the Cuyahoga Shale. 



The following list of common fossils from the Cuyahoga shale is not only- 

 very incomplete, but doubtless contains many identifications requiring veri- 

 fication as soon as a revision of the published species from the same horizon in 

 Michigan and Illinois shall make this possible. It will, however, give a fair 

 idea of the assemblage of forms under consideration. The numerals affixed 

 indicate in a general way the known geographical distribution as follows : 

 (1) localities on the Ohio river; (2) localities in central Ohio, chiefly in Lick- 

 ing county at Moot's run ; and (3) exposures within the northern tier of 

 counties : 



CRUSTACEA. 



FhaetJionides spinosus, Her. (1, 2, 3). Proetiis minutus, Her. (2). 



" immaturus, Her. (3). " prcecursor, Her. (2, 3). 



" lodiensis, Meek (3). Dalmanites cuyahoga, Claypole (3). 



*' consors, Her. (3). 



LA MELLIBRA NCHIA TA . 



Allorisma cuyahoga, Her. (3). Mytilarca fibristriatus, W. and W. (1). 

 Avicula (?) recta, Her. (3). " occidentalis, W. and W. (2). 



Crenipecien coopei^i, Her. (2, 3). Palceaneilo marshallensis, Win. (2). 

 " subcardiformis, Her. (2). " (?) ohioemis. Her. (2). 



" cancellatus. Her. (2, 3). " consimilis, Her. (2, 3). 



Conocardhnn alterni sir latum, Her. (3). " ignota, Her. (2, 3). 



Ctenodonta ioiuensis, W. and W. (?) Palcdaneilo sulcatina, Her. (2). 



(2, 3). ■ Fromacra truncata, Her. (2). 



Ctenodonta sp. Pterinopecten shumardiamis (1,2, 3). 

 Cyjorlcardlnia scitida. Her. (2, 3). " cariniferus, Her. (2, 3). 



Edmondia sidcifera, Her. (1,2, 3). " ashlandensis. Her. (2, 3). 



Leptodesma ortoni. Her. (2). " Icetus, Hall (2). 



" nasutus, Her. (= hector, Schizodus harlamensis, Her. (2). 



H. (?) (2, 3). Sphenotus contractus, Hall (2). 

 Lyriopecten nodocostatiis, Her. (2, 3). " Jragills, Her. (2). 



Macrodon striato-costatus. Her. (cf. " media, Her. (2). 



parvus, W. and W.) (2, 3). 



GASTEROPODA. 



Bellerophon sp. Loxonema sp. (1, 2, 3). 



" perelegans, Win. (2 ?). Natlcopsis sp. (1, 2, 3). 



Comdaria gracilis, Her. (2). Orthoceras sp. (2, 3). 



" micronema, Meek (2). Platyceras paralium. Win. (1, 2, 3). 



Cyclonema levenworthanum (?) (2). Platyceras sp. 



" strigillatum, Her. (1, 2, 3). Pleurotomaria textiligera, Meek (3). 



(41J 



