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See also:
  • Archaeocidaris urii - Image of fossilised spines of this echinoid from the Early Carboniferous, found in Cumbria, UK.
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  • Clypeus plotii - Photograph of a fine specimen of this irregular echinoid from the Middle Jurassic.
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  • 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.
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  • Hemicidaris mantochensis - Several photographs of fossilised tests of this echinoid, found at Portlandian, France.
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  • Holectypus hemisphaericus - Images of this echinoid from the Middle Jurassic, found at Beaminster, UK.
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  • Micraster coranguinum - Photographs of this irregular echinoid from the Late Cretaceous, found in Croydon, UK.
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  • Peer's Echinoid Pages - Information about and images of echinoids from the Cretaceous Period (Maastrichtian) from the Netherlands.
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Category editor: sephiroticvm
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Last update: November 25, 2011 at 7:15:03 UTC - edit