A new brittle star (Ophiuroidea: Ophiodermatina) from the Early Triassic Paris Biota (Bear Lake County, Idaho, USA). - Université Clermont Auvergne Accéder directement au contenu
Article Dans Une Revue Geobios Année : 2019

A new brittle star (Ophiuroidea: Ophiodermatina) from the Early Triassic Paris Biota (Bear Lake County, Idaho, USA).

Arnaud Brayard
Kevin G. Bylund
  • Fonction : Auteur
Emmanuel Fara
James F. Jenks
  • Fonction : Auteur
Nicolas Olivier
Emmanuelle Vennin

Résumé

Knowledge on the morphology of Early Triassic ophiuroids is very limited, in spite of the relatively high number of described species. This hampers attempts to use morphology-based phylogenetic analyses in order to explore the early diversification of the ophiuroid modern clades between the latest Paleozoic and the early Mesozoic. Here, a new ophiuroid from the Early Triassic of southern Idaho (USA) is described and assigned to the new taxon Shoshonura brayardi Thuy nov. gen., nov. sp. It is part of an exceptional Early Triassic faunal assemblage recently described as the Paris Biota. On account of the arm morphology and the shape of the arm spines and arm spine articulations, Shoshonura brayardi nov. gen., nov. sp. is considered a basal member of the suborder Ophiodermatina.

Domaines

Paléontologie
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Dates et versions

hal-02168465 , version 1 (28-06-2019)

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Citer

Ben Thuy, Gilles Escarguel, Arnaud Brayard, Kevin G. Bylund, Emmanuel Fara, et al.. A new brittle star (Ophiuroidea: Ophiodermatina) from the Early Triassic Paris Biota (Bear Lake County, Idaho, USA).. Geobios, 2019, 54, pp.55-61. ⟨10.1016/j.geobios.2019.04.004⟩. ⟨hal-02168465⟩
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