Les Acritarches de l’Ordovicien inférieur de la Montagne Noire (Hérault, France)

Outcrops of the Tremadocian of the Montagne Noire (Hérault, France) have yielded acritarch assemblages, in the Monts de Cabrières, composed of fifty-six species and one subspecies; eleven of thèse species, Micrhy2 stridium cleae, Vulcanispbaera gorgo, V. ? mougnoanum, Priscogalea ? glabra, P. gautieri, P. prisma, Cymatiogalea bouvardi, Acanthodiacrodium acbrasi, A. rupeum, A. scytotomillei and Dictyotidium bonneti and the subspecies Priscogalea cuvillieri fucata are new. The subspecies and fifteen of the species also occur at Col de Sainte- Colombe, in the Monts de Pardailhan. Two genera, Priscogalea DEUNFF, J., 1961 and Goniosphaeridium EISE¬ NACK, A., 1969 emend. KJELLSTRÖM, G., 1971, and one species, Cymatiogalea stelligera GORKA, H., 1967 are redescribed. The analysis of the Acritarchs indicates that the tectonic slices of black shales at Roquemaillère, in the Monts de Cabrières, are not necessarily of Silurian age, as previously thought, but may include deposits of Arenigian or Llanvirnian age