Further Observations on the Devonian Plants of Maine, Gaspé, and New York

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Abstract
The present paper raises the number of species obtained from the Devonian rocks of Eastern America to about eighty-two, but does not in any respect invalidate the general conclusions stated in my former paper. Of the whole number of species, only two can with certainty be referred to the Lower Devonian, and these also occur higher in the series. Twenty-one are found in the Middle Devonian, and of these nine or ten ascend to the Upper Devonian, which has afforded about sixty-eight species; and of these probably ten are known in the Carboniferous System. It must be observed, however, that the precise age of the beds at Perry and St. John is uncertain, and that they are referred to the Upper Devonian principally on the evidence of their fossil Plants,—the stratigraphical evidence being sufficient merely to prove their Precarboniferous date.

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