Page:The Eurypterida of New York Volume 1.pdf/88

 Chart showing the eurypterid localities of New York. The dots give the approximate number of species occurring in each locality; their size indicates the relative frequency of the species. The belt ruled from right to left denotes the exposure of the Salina beds; that ruled from left to right the exposure of the Shawangunk grit. The eurypterid-bearing area of the Frankfort beds is inclosed between the dotted lines.