Where: South Dakota · Europe · approx. 44.0, -102.0 (vicinity only)
Why this spot: Cretaceous
What turns up: Baculites, Placenticeras ammonites, Inoceramus in Pierre Shale badlands
Access: Gray area.
Pierre Shale exposures on mixed BLM/private/tribal land; invertebrate collecting on BLM permitted, elsewhere permission needed. Vertebrates protected.
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.