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The ammonoids from the Early Carboniferous (Mississippian) Dalle à  Merocanites  of Timimoun (Gourara, Algeria) are described. The following new ammonoid taxa are introduced: subfamily Hammatocyclinae n. subfam.,  Hammatocyclus pollex  n. sp.,  Hammatocyclus corrugatus  n. sp.,  Neopericyclus arenosus  n. sp.,  Ammonellipsites pareyni  n. sp.,  Ammonellipsites menchikoffi  n. sp.,  Ammonellipsites conradae  n. sp.,  Muensteroceras fabrei  n. sp.,  Eurites commutatus  n. sp.,  Eurites pondus  n. sp., subfamily Trimorphoceratinae n. subfam.,  Trimorphoceras  n. gen.,  Trimorphoceras crassilens  n. sp.,  Trimorphoceras absolutum  n. sp.,  Trimorphoceras molestum  n. sp.,  Obturgites  n. gen.,  Obturgites polysarcus  n. sp.,  Obturgites oligosarcus  n. sp.,  Dzhaprakoceras dzhazairense  n. sp., and  Merocanites merocanites  n. sp. These species occur in one very prolific horizon and can be attributed to the North African  Ammonellipsites-Merocanites  Assemblage ( Fascipericyclus -Ammonellipsites  Genus Zone; Late Tournaisian to Early Viséan). They represent one of the most diverse ammonoid faunas known from this time interval.    doi: 10.1002/mmng.200900011

The ammonoids from the Dalle à <i>Merocanites</i> of Timimoun (Late Tournaisian–Early Viséan; Gourara, Algeria)