Abstract
Stigmaria wedingtonensis occurs in Nevada, Arkansas, Illinois, Kentucky and Indiana. It is found throughout the Chesterian Series (Upper Mississippian) and has a longer stratigraphic range than that of S. stellata, a similar European form. In the Indian Springs Formation of the Bird Spring Group in Arrow Canyon, Clark Co., Nevada, Stigmaria was found in situ extending down into the underlying marine limestone of the Battleship Wash Formation. It represents a
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