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PalaeovertebrataVol. 13, Fasc. 3:33-50. 1983
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Acinoptèrygiens du Stéphanien de Montceau-les-Mines (Saône-et-Loire, France).
Daniel Heyler and Cécile PoplinKeywords: Aeduelliforms; Biogeography; Palaeonisciforms; paramblypteriforms; Stephanien
Cite this article: Heyler D., Poplin C., 1983. Acinoptèrygiens du Stéphanien de Montceau-les-Mines (Saône-et-Loire, France). Palaeovertebrata 13 (3): 33-50.
The study of new specimens from the Stephanian shales of Montceau-les-Mines confirms and enlarges the number of groups already known in this area. Among the Palaeonisciforms, “form A" is now known more completely, although no diagnosis or name can yet be given for it. “Form B" is redescribed and its relationships with “Elonichthys robisoni" are discussed. A palaeoniscid is recorded which resembles those from Bourbon l'Archambault. The paramblypteriforms occur rather frequently, but no genera can be determined. The aeduelliforms comprise some specimens close to Aeduella blainvíllei from Muse (Autun basin), and a new genus. Comparison of the latter with two fossils from Lally allows creation of two new species and a new family. This diversification of the aeduelliforms during this middle Stephanian leads to the hypothesis that the group originated at least as early the lower Stephanian. This material prooves again the characteristic endemism of this fauna, particularly of the aeduelliforms which are known only in the Massif Central where they diversified during the Permo-Carboniferous. Biogeographical consequences are discussed.
Published in Vol. 13, Fasc. 3 (1983)