Discovering Fossils: What is an Echinoid?
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Scan day: 17 February 2014 UTC
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Description: 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.
DISCOVERING FOSSILS | What is an echinoid? Written and designed by Roy Shepherd. Special thanks to my wonderful wife Lucinda Shepherd, friend Robert Randell and various experts for their support. An internal flint mould of an echinoid
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| Page title: | DISCOVERING FOSSILS | What is an echinoid? |
| Keywords: | echinoid, test, spines, shepherd, crown, echinocorys, cidaris, fossils |
| Description: | Roy Shepherd explains what an echinoid is and how they live. |
| IP-address: | 82.165.120.9 |