Sylvania OH: Fossil Park Devonian quarry

Where: US Midwest · North America · approx. 41.73, -83.77 (vicinity only)

Why this spot: Rockhounding locality: Silica Shale spoil from the adjacent Hanson quarry, world-famous 375-million-year-old Devonian fauna served up for the public

What turns up: brachiopods, horn corals, crinoid bits, Eldredgeops trilobites (prized), pyritized shells

Access: Open / legal.

Free public fossil park, keep what you find; no tools allowed, hands and small screens only, seasonal hours

Satellite view, historic-map overlays, tide/flow context and field notes are in the app. Exact research detail is part of Pro.