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Enodicalix (Diploporita, Aristocystitidae) : a new echinoderm genus from the Middle Ordovician of Spain
Paul, C. R. C. (University of Bristol. School of Earth Sciences)
Gutiérrez-Marco, Juan Carlos (Consejo Superior de Investigaciones Científicas. Instituto de Geociencias)

Date: 2020
Abstract: Restudy of an Ordovician diploporite specimen from the Middle Ordovician of central Spain reveals that the species 'Calix'inornatusMeléndez has four ambulacra, each with two equal facets, an oval hydropore and a smooth thecal surface. In contrast, the type species of Calixhas four ambulacra, each with four facets added in a clockwise direction during growth, a trilobed hydropore, and a theca with spiny plates. Other aristocystitid genera with four ambulacra have one facet per ambulacrum. 'Calix'inornatusdiffers from all other aristocystitid genera and warrants a new generic name, for which we propose Enodicalix.
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Language: Anglès
Document: Article ; recerca ; Versió publicada
Published in: Geologica acta, Vol. 18 (2020) , p. 1-8 (Articles) , ISSN 1696-5728

Adreça alternativa: https://raco.cat/index.php/GeologicaActa/article/view/363652
Adreça alternativa: https://revistes.ub.edu/index.php/GEOACTA/article/view/GeologicaActa2020.18.3
DOI: 10.1344/GeologicaActa2020.18.3


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 Record created 2020-12-22, last modified 2025-03-29



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