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Open Directory - Science: Earth Sciences: Paleontology: Invertebrates: Echinoderms
Science: Biology: Flora and Fauna: Animalia: Echinodermata
Science: Biology: Zoology: Echinodermata
- Image of fossilised spines of this echinoid from the Early Carboniferous, found in Cumbria, UK.
- Photograph of a fine specimen of this irregular echinoid from the Middle Jurassic.
Discovering Fossils: What is an Echinoid?
- Provides photographs and information on echinoids, or sea urchins, the arrival of regular species in the fossil record in the Cambrian and the appearance of irregular ones in the Jurassic.
- Several photographs of fossilised tests of this echinoid, found at Portlandian, France.
- Images of this echinoid from the Middle Jurassic, found at Beaminster, UK.
- Photographs of this irregular echinoid from the Late Cretaceous, found in Croydon, UK.
Peer's Echinoid Pages
- Information about and images of echinoids from the Cretaceous Period (Maastrichtian) from the Netherlands.
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