Page:The Habitat of the Eurypterida.djvu/108



This formation is typically developed in the western part of central New York where, in the town of Pittsford, Monroe county, the following section is shown (Sarle, 240, 1082):

The eurypterid fauna occurs in the black shales, Nos. 8 and 10.

A more complete section is shown in the wells of the region, from which the exact location of the fossiliferous black shale beds is ascertainable. The section carries the series clown to the Lockport-Guelph horizon.