🦴 Fossil facts
| Age | Cambrian to Permian, about 521–252 million years ago |
|---|---|
| Origin & sources | Morocco (Atlas Mountains), Utah (Wheeler Shale, Elrathia kingii), New York, Ohio, Russia (St Petersburg region), China. |
| Composition | Calcite exoskeleton, often preserved in shale or limestone |
How it forms
Trilobites were marine arthropods with calcite eyes. Their molted or dead exoskeletons were buried in fine seafloor sediment that hardened into shale and limestone.
🌍 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
RootThird Eye
Healing crystal
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