OBSERVATIONS UPON THE WAVERLY GROUP 509 



marionensis and Sp. disjiinctns, a Chonetes like C. scitula, a Palseoneilo 

 like P. sulcatina, a Schizodus somewhat like .S. medinaensis, a fine Pleuro- 

 tomaria, consimilis and a Proetus being the entire find. The 

 patient student will perhaps secure added material from exposures of 

 this horizon one mile east of Harlem and four miles west of Jersey. 



In northern Ohio the same series may be found near the lower falls 

 of the Cuyahoga, where a number of specimens occur, constituting a 

 faunal assemblage quite different from that nearer the conglomerate. 

 (Atlorisma cuyahoga, Discina newberryi, etc., occur.) At Portsmouth, 

 in southern Ohio, this series of shales is nearly suppressed and the true 

 Cuyahoga fauna appears only a few feet above the Buena Vista flags. 



The most important portion of the Cuyahoga is that which occupies 

 the upper 90-100 feet at Cuyahoga Falls. Professor Orton says, "The 

 fossils with which the Cuyahoga shale has been credited have been 

 largery derived from the division next to be described [Logan Group] 

 while this was counted part of the shale. As here limited, it is for the 

 most part very poor in fossils." This, as we have seen, is true of Mr. 

 Meek's work but does not apply to the collections studied by Professor 

 Hall and others. Geologists have been looking at two sides of the 

 shield. Statements based on the collections from the Logan do not 

 apply to the Cuyahoga. At the present time it can no longer be said 

 that the Cuyahoga is poor in fossils. As stated in 1888, "This division 

 is one of the most interesting in the State, preserving its fossils, thanks 

 to the calcareous concretions, in perfect condition. The species are 

 mostly new to science but have analogies with Chemung and Hamilton 

 forms. The bryozoa have not furnished conclusive evidence, most of 

 them being new. The upper thirty or forty feet contain the concretions 

 with three or four new trilobites, and Spirifer marionensis ; Fenesteha 

 herrickana, Lyriopecten f cancellatus, Pterin'opecten cari?ii/erus, Streblop- 

 teriafragilis, Promacra ? trimcata, etc., are characteristic species. Traces 

 of the same fauna can be followed downward over 100 feet." 



Probably the best consecutive exposure of the Waverly is near Lyon's 

 Falls a few miles southwest of Loudonville. Here the fauna of this 

 horizon is abundantly represented, both in calcareous concretions and 

 the enclosing shales. The characteristic portion is seventy feet below 

 conglomerate I. and contains Phcethonides spinosus, Proeius precursor, 

 Edmondia sulcifera, Limatulina ohioensis, Lyriopecten cancellahis , L. nodo- 

 costatus, Palceoneilo ignota, Pterinopecten cariniferus, Pterinopecten shnm- 

 ardianus, P. ashlandensis, Streblopteria fragilis, Cyclonema strigillatum, 

 Chonetes tumida, Spirifer marionensis, Sp. tcnuispinatus. 



An identical fauna is found in the same horizon at Moot's run some 

 five miles west of Granville in Licking county, where it has been most 

 carefully studied. 



Along the Ohio river the same association of fossils is found in the 

 shales twenty feet above the Buena Vista flags, and may be easily studied 



