🦴 Fossil facts
| Age | Late Cretaceous, about 90–66 million years old |
|---|---|
| Origin & sources | Chalk downs of southern England (Wiltshire, Sussex, Dorset) and northern France. |
| Composition | Flint (silica) cast of an echinoid test (Echinocorys, Conulus and others) |
How it forms
Silica dissolved in the chalk sea collected inside buried urchin shells and hardened into flint. When the chalk weathers away, these hard flint 'crowns' turn up in fields and on the downs.
🌍 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
Gray
RootCrown
Healing crystal


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