Solutan echinoderms from the Lower Ordovician of the Montagne Noire (France): new data and palaeobiogeographic implications - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Estonian Journal of Earth Sciences Année : 2023

Solutan echinoderms from the Lower Ordovician of the Montagne Noire (France): new data and palaeobiogeographic implications

Résumé

Solutans are relatively common members of echinoderm assemblages in the Saint-Chinian Formation (upper Tremadocian) of the Montagne Noire (France). The revision of all available material confirms that most specimens can be assigned to Minervaecystis vidali, which is here reconstructed for the first time. The occurrence of Plasiacystis mobilis evidenced based on a single, well-preserved dististele. The interpretation of a small-sized individual as a putative dendrocystitid is rejected: it corresponds to a juvenile specimen of M. vidali. Early Ordovician solutans from the Montagne Noire partly fill the gap between Laurentian mid-late Cambrian syringocrinids and Avalonian-Gondwanan Early-Mid Ordovician taxa.
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Dates et versions

hal-04271100 , version 1 (05-11-2023)

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Christophe Dupichaud, Bertrand Lefebvre, Martina Nohejlová. Solutan echinoderms from the Lower Ordovician of the Montagne Noire (France): new data and palaeobiogeographic implications. Estonian Journal of Earth Sciences, 2023, 72 (1), pp.26. ⟨10.3176/earth.2023.80⟩. ⟨hal-04271100⟩
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