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Article: A new Early Ordovician conodont genus from the southern Mmontagne Noire, France

Publication: Palaeontology
Volume: 50
Part: 6
Publication Date: November 2007
Page(s): 1447 1457
Author(s): Enrico Serpagli, Annalisa Ferretti, Daniel Vizcaïno and José Javier Álvaro
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How to Cite

SERPAGLI, E., FERRETTI, A., VIZCAÏNO, D., ÁLVARO, J. 2007. A new Early Ordovician conodont genus from the southern Mmontagne Noire, France. Palaeontology50, 6, 1447–1457.

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Two species of a new Tremadocian (Early Ordovician) conodont genus from the Saint Chinian Formation of the southern Montagne Noire, France, are erected: Hammannodus sarae gen. et sp. nov. and Hammannodus juliae gen. et sp. nov. They were found within a single storm-induced limestone nodule interbedded with offshore shales belonging to the regional Shumardia (C.) pusilla (trilobite) Biozone, and to the Paltodus deltifer deltifer (conodont) Subzone. This conodont record is associated with the episodic development of carbonate productivity in temperate waters of the Montagne Noire platform, a process absent in neighbouring platforms of north-west Gondwana. The apparatus is composed of five coniform pyramidal elements occupying P and S positions and one bicostate element in the M position, having three or two sharp costae, respectively, with a subtriangular basal outline.
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