Where: Ohio · North America · approx. 39.49, -84.05 (vicinity only)
Why this spot: Ordovician limestone and shale
What turns up: Brachiopods, bryozoans, trilobites, horn corals and crinoid stems
Access: Open / legal.
Army Corps spillway where collecting is allowed with a free permit from the visitor center; palm sized limit.
Open in Mudlark Map →
Satellite view, historic-map overlays, tide/flow context and field notes are in the app. Exact research detail is part of Pro.
Pins are approximate by design. This page is historical research, not permission to dig. Check ownership and local law first.