Palaeo Ichthyologica, Volume 10 [French] Nouvelles Faunes de Sélaciens (Elasmobranchii, Neoselachii) de l'Eocène moyen des Landes (Sud-Ouest, France) - Implication dans la Connaissance des Communautés de Sélaciens d'Eaux Profondes

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Language: French

Palaeontological explorations in the paleogene deposits from the South part of the Aquitanian basin led to the discovery of two new fossil selachian associations in the bathyal marls of Landes (South-western of France). These new associations come from two old marl quarries: Tailledis (Saint-Géours-d'Auribat) and Miretrain (Angoumé) and are dated to the Ypresian/Lutetian limit and the Middle Lutetian-lower Bartonian respectively.

Ninety-one species are reported and 73 are illustrated. The fauna consists of 29 new taxa in open nomenclature and 27 taxa described as new species: Orthechinorhinus pfeili, Deania angoumeensis, Scymnodalatias cigalafulgosii, Squaliolus gasconensis, Eosqualiolus aturensis, Acrosqualiolus mirus, Etmopterus cahuzaci, Paraetmopterus nolfi, Pristiophorus lacipidinensis, Orectoloboides reyndersi, Hemiscyllium tailledisensis, Pararhincodon germaini, Woellsteinia kozlovi, Triakis chalossensis, Xystrogaleus cappettai, Apristurus sereti, Scyliorhinus trifolius, Foumtizia poudenxae, Platyrhizoscyllium jaegeri, ?Rhinobatos auribatensis, Raja marandati, Raja michauxi, Hexatrygon senegasi, Coupatezia miretrainensis, Aturobatis aquensis, Torpedo acarinata and Torpedo pessanti.

7 new genera are described on their dental morphology: Orthechinorhinus nov. gen. (Squaliformes, Echinorhinidae), Eosqualiolus nov. gen., Acrosqualiolus nov. gen. (Squaliformes, Dalatiidae), Paraetmopterus nov. gen. (Squaliformes, Etmopteridae), Xystrogaleus nov. gen. (Carcharhiniformes, Triakidae); Platyrhizoscyllium nov. gen. (Carcharhiniformes: Scyliorhinidae incertae sedis) and Aturobatis nov. gen. (Myliobatiformes indet.).

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