10 CATALOG OF FOSSIL FISHES IN THE MUSEUM 



with closely crowded tubercles, described on a subsequent page of 

 this catalog as a new genus of ptyctodont, under the name of Deinodus. 



Macropetalichthys rapheidolabis Norwood & Owen 



Acanthaspis armata Newberry 



Eczematolepis fragilis (Newberry) 



Arthrodire indet. [fragmentary plates] 



Machoer acanthus major Newberry 



Deinodus hennetti, n. gen., n. sp. 



Onychodus sigmoides Newberry 



This is a typical Onondagan faima, with aU the more important 

 species known from other Onondagan formations, for instance, the 

 Delaware limestones of Ohio. It should be remembered, however, 

 that the Onondaga of New York is not exactly coeval with the Dela- 

 ware limestones of Ohio; and that, therefore, the faimas cannot be 

 expected entirely to correspond. This accounts for the presence in 

 the Buffalo Onondaga of such a form as Deinodus, and its absence 

 from the Ohio formations; or the absence from the New York hori- 

 zon of some forms present in the former. 



Marcellus and Hamilton 



The Erian Group, including the MarceUus and Hamilton stages, 

 is well represented in the vicinity of Buffalo, although not so exten- 

 sively developed as at some other localities in New York State. 

 Fossil fishes are extremely rare in these formations. In the vicinity 

 of Buffalo only a single species has been obtained from them in 

 many years of collecting by various investigators. This species is 

 Machcer acanthus longoevus Eastman, the type of which is from the 

 "Trilobite bed" (lower portion of the Hamilton), near the mouth of 

 Eighteen Mile Creek. 



UPPER DEVONIC FORMATIONS 



The other fish bearing formations near Buffalo are of Upper De- 

 vonic Age — TuUy, Genesee and Portage. The most fruitful locah- 

 ties are: (i) along the shore of Lake Erie, near Sturgeon Point, about 

 15 mUes west of Buffalo (fig. i); and (2) on Eighteen Mile Creek, 

 near the villages of North Evans and Hamburg, N. Y. From these 

 two localities the bulk of the Buffalo collection has been derived. 



