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  1. Archaeocidaris whatleyensis sp. nov. (Echinoidea) from the Carboniferous limestone of Somerset, and notes on echinoid phylogeny
    By: Lewis, D N - Ensom, P C
    Type: Article
    In: Bulletin of The British Museum (Natural History) Geology
    Volume: 36
    Date: 1981
    Page Range: 77--104
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