Spore biostratigraphy of the Upper Devonian Canadaway Group in Southwestern New York State, principally Chautauqua and Cattaraugus Counties.
Reference:
Merriam,J.C. (1977)
Spore biostratigraphy of the Upper Devonian Canadaway Group in Southwestern New York State, principally Chautauqua and Cattaraugus Counties. Empire State Geogram
Vol. 13 # 1 P. 19- 19