Holzmaden Posidonia Shale, Baden-Wurttemberg

Where: Baden-Wurttemberg · Europe · approx. 48.64, 9.46 (vicinity only)

Why this spot: Early Jurassic (Toarcian) black shale

What turns up: Ichthyosaurs, plesiosaurs, crinoid colonies (Seirocrinus), ammonites, fish

Access: Permission required.

Working slate quarries; a hobby-collecting quarry near Holzmaden (Kromer) allows paid digging.

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