Groupe de Candona clivosa, nouveau groupe de Candoninae (Crustacea, Ostracoda) et sa diversification dans le Bassin de Turiec (Slovaquie) au Miocène supérieur |
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Authors: | Radovan Pipík Anne-Marie Bodergat |
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Institution: | a Geological Institute, Slovak Academy of Sciences, Severná 5, 974 01 Banská Bystrica, Slovaquie b UMR 5125 Paléoenvironnements et paléobiosphère, université Claude-Bernard Lyon-I, bâtiment Géode, 2, rue Raphaël-Dubois, 69622 Villeurbanne cedex, France |
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Abstract: | The Candona clivosa-group, a new group of Candoninae - is erected on the base of the folded inner lamella observed on the postero-ventral border of the female valve. The elongated sub-triangular and rectangular valves of this group are described from the Miocene and Quaternary deposits of Europe. A folded inner lamella is also observed in 11 species of Candona from the Upper Miocene of the Turiec Basin of which 8 are new - Candona fatrica nov. sp., C. tatrica nov. sp., C. lacustris nov. sp., C. palustris nov. sp., C. stagnosa nov. sp., C. laterisimilis nov. sp., C. jiriceki nov. sp. and C. incurva nov. sp. They show a higher variability of the outline, calcification of the valves and width of the zone of concrescence. The extrinsic and intrinsic aspects of this morphological diversification in the Turiec Basin are discussed. |
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Keywords: | Crustacea Ostracoda Palé obiogé ographie Miocè ne supé rieur Milieu d'eau douce |
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