310 EDWARD M. KINDLE 
limestone bed in the upper part of the Monroe formation, to which 
Scherzer, Grabau, and others have applied the name Anderdon 
limestone. This bed holds a peculiar fauna of supposed Silurian 
age. 
In Ontario the relationship of the Oriskany sandstone to the 
Onondaga limestone seems to have been misunderstood until 
very recently. Collections and lists of fossils made by the earlier 
students of the Ontario Devonian purporting to represent the 
Oriskany have shown a large proportion of Onondaga species. 
This has led to the generally accepted view that a fauna existed in 
Fic. 4.—The disconformable contact (A-B) of the Onondaga and the Cobleskill 
limestones at one of the Akron, N.Y., cement mines. From a photograph. 
Ontario which was intermediate in character between the ordinary 
Oriskany and Onondaga faunas. A new formation name—Decews- 
ville formation?—was proposed for the beds holding this fauna. 
Dr. C. R. Stauffer? has recently shown that the ‘‘ Decewsville” 
fauna of mingled Onondaga and Oriskany affinities has had its 
origin in the mixing of fossils from adjacent formations. The 
relationship of Oriskany and Onondaga formations he has found 
t Mich. Geol. and Biol. Surv. Pub. 2, Geol. Ser. (1910), pp. 42-48. 
2 Ulrich and Schuchert, “‘ Paleozoic Seas and Barriers in Eastern North America,” 
Bulletin New York State Mus., No. 52 (1901), p. 653. 
3 Bull. Geol. Soc. Am., XXIII, 371-76. 
