Paraostenia Secrétan, 1985
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publication ID |
https://doi.org/10.4202/app.1180.2024 |
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persistent identifier |
https://treatment.plazi.org/id/822687D4-575B-8350-FFE8-55AFFD90FF16 |
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treatment provided by |
Felipe |
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scientific name |
Paraostenia Secrétan, 1985 |
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Genus Paraostenia Secrétan, 1985
Type species: Paraostenia voultensis Secrétan, 1985 , by monotypy— gracilis Biozone, lower Callovian , Middle Jurassic; La Voulte-sur-Rhône, Ardèche, France .
Species included: Paraostenia ambatolokobensis ( Arduini, 1990) , Dienerian/Smithian, Lower Triassic, Madagascar; Paraostenia striata Glaessner, 1931 ) comb. nov., Carnian, Upper Triassic, Austria; Paraostenia voultensis Secrétan, 1985 , Callovian, Middle Jurassic, France; Paraostenia sp. Ehiro & Kato in Ehiro et al., 2015, Spathian, Lower Triassic, Japan.
Emended diagnosis (after Laville et al. 2023).— Thylacocephala with a symmetric optic notch, a sharp anterodorsal corner, a dorsal carina, a concave posterior margin, rounded posterodorsal and posteroventral corners, long and gracile appendages.
Stratigraphic and geographic range.—Dienerian to Callovian, Early Triassic to Middle Jurassic; Asia ( Japan), Africa Madagascar) and Europe ( Austria, France).
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