The body preservation on this Eurypterid, an ancient, extinct arthropod, is well defined with minor elements of walking, feeding or swimming appendages present. To tell a family secret; there is fossilized evidence of the genital ridge, which is nice and  something your neighbors are unlikely to have. The Eurypterid is the State Fossil of New York. After its 1818 discovery in Oneida county N.Y., and a 7 year hiatus misidentified as a fish, it was first accurately described as an arthropod in 1825. The matrix plate is well trimmed providing an appropriate canvas for this classic American fossil. From the legendary Lang's Quarry, Fiddler Green Formation, Phelps Member, Herkimer County, New York. 3.75" x 3.5" x .5", 7.8 oz.