On the higher Devonian faunas of Ontario county, New York

The materials and the conclusions presented in this paper are the partial results of studies of the Devonian of Western New York, which have been of several years duration. Since the summer of 1877 much attention has been given to the finer subdivision of the Devonian on strictly paleontological evidence, the rich development of Devonian faunas within Ontario County, and in its vicinity, having afforded an unequaled opportunity for such work. What is here given concerns only the Higher Devonian strata and their contents, viz., those of the Genesee, Portage, and Chemung formations, and the materials here made use of have been derived principally from the county of Ontario, with important additions from the eastward and westward extension of these strata into the adjoining counties of Yates and Livingston.