The early Visean (Carboniferous) conodonts from the Saoura Valley, Algeria
Authors
Tamara I. Nemyroska
Institute of Geological Sciences of the National Academy of Sciences of Ukraine,o. Gonchar Str., 55-b, 052054 Kiev
Marie-France Perret-Mirouse
Universite Paul Saba tier, Laboratoire de Mecanismes et Transferts en Geologie, Equipe de geodynamique, 14Avenue Edouard Belin, 31400, Toulouse
Marcel Weyant
71 rue Alfred Hare!, Anisy, 14610 THAON
Keywords:
Visean, Carboniferous, Conodonts, Saoura Valley, Algeria, Biostratigraphy, Taxonomy
Abstract
The present study reports on conodonts from the El Hariga Formation (lower Visean) of the Saoura Valley, Algeria. This formation overlies the Hassi Sguilma Formation with the latest Tournaisian conodont assemblage with Scaliognathus anchoralis and it is overlain by the Mazzer Formation with the mid-Visean conodont fauna with Gnathodus bilineatus. The conodont assemblage of the El Hariga Formation contains the latest Tournaisian gnathodontids and the Visean Pseudognathodus and unornamented early Visean species of Lochriea. A new species, Lochriea saharae, a probable earliest representative of Lochriea is described. Its relationships to L. cracoviensis, L. commutata and Bispathodus stabilis are discussed.
