On the Carboniferous Xiphosurous Fauna of North America (Classic Reprint)
Author: Alpheus Spring Packard
Publisher: Forgotten Books
Release Date: January 20, 2019
Excerpt from On the Carboniferous Xiphosurous Fauna of North America
Cyclus americana Pack., Amer. Naturalist, xix, 293, March, 1885.
In a nodule from Mazon Creek, Illinois, received from Mr. Lacoc, I recognize a species of this rather obscure genus, which has not before occurred in North America, though in Europe nine species have been described.
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