28mm. A gift from Jeffrey P. Marcellus Shale, Oatkacreek Formation, Motka Member, Hamilton Group, Givetian, Middle Devon. Found at Swamp Rd. quarry, Morrisville, NY.
28mm. long. A gift from Jeffrey P. Marcellus Shale, Oatkacreek Formation, Motka Member, Hamilton Group, Givetian, Middle Devon. Found at Swamp Rd. quarry, Morrisville, NY.