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Monday I was in Schoharie County up on the Helderberg Plateau southwest of Albany, NY. In a roadside exposure of the Manlius Formation I picked up several pieces of rock with numerous Tentaculites specimens. There were also small brachiopods and ostracods. The Manlius Formation either represents the bottom of the Helderberg Group- the lowest of the Lower Devonian or the highest formation in the Silurian in New York. Tentaculites were originally thought to be related to mollusks or worms, but now are considered more closely related to brachiopods and bryozoans.