Where: Colorado · Europe · approx. 40.06, -106.38 (vicinity only)
Why this spot: Cretaceous
What turns up: Giant Placenticeras ammonites, baculites in Pierre Shale
Access: Open / legal.
BLM Kremmling Cretaceous Ammonite Research Natural Area allows limited personal-use invertebrate collecting under BLM rules; giant ammonites protected in the RNA core.
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.