Page:The Eurypterida of New York Volume 1.pdf/106

 The peculiar yellow plattenkalke and marls of Oesel which contain the well known Baltic eurypterid fauna are of similar character with the Salina eurypterid beds.

A different rock facies containing eurypterids is represented in the Pittsford shale and the Shawangunk grit shale beds. In the former the fossils occur in a rather fissile, very dark olive-green to black shale. Its relations to the Salina section have been recorded by Sarle [1903, p. 1082].