🦴 Fossil facts
| Age | Ordovician to present. Showy slabs are Devonian to Jurassic, about 400–150 million years old |
|---|---|
| Origin & sources | Hunsrück Slate (Germany), the Jurassic of Dorset (Beaminster), Morocco and Solnhofen (Germany). |
| Composition | Calcite plates, sometimes pyritized, on shale or limestone slabs |
How it forms
Brittle stars live in dense groups on the seafloor. Sudden mudflows sometimes buried whole colonies, leaving slabs covered with intact skeletons.
🌍 Where it's found
- Type locality
- Notable source / deposit
- Country of origin
Marker positions are approximate (region or locality level). Type localities from Wikidata; notable sources curated by Crystopedia.
Learn more
Fossil
Orange
HeartThroat
Healing crystal




