Découverte d'une faune d'ostracodes dans le Trias des monts d'Oujda (Maroc) : relations paléogéographiques entre les plates-formes nord et sud de la Téthys

An ostracod fauna is discovered for the first time in the Oujda Mountains (Morocco) Triassic series. A new species is described (Lutkevichinella kristanae n.sp.). These assemblages allow us to define the age (Late Norian on one hand and Late Ladinian/Early Carnian on the other). Faunal analogies with Germany lead us to place the studied levels in a brackish environment and to propose close relationships between Northern and Southern Tethyan margins at this time. The carbonate levels of the Oujda Mountains, in their tectonic context, suggest marine onlap coming from the North East, from the Tethys.