Hall J., Whitfield R.P. (1872). Notice of two new species of fossil shells from the Potsdam sandstone of New York. Annual report of the Regents of the University of the State of New York. 23: 241-242.
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Hall J., Whitfield R.P.
1872
Notice of two new species of fossil shells from the Potsdam sandstone of New York
Annual report of the Regents of the University of the State of New York