Gondwaninc affinities of the Jurassic andLower Cretaceous marine ostracods (Crustacea) from the Neuquén Basin, Argentina

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Sara Ballent

Abstract

Records of the Mesozoic marine Cytheroidea Paradoxorhyncha Chapman, Rostrocytheridea Dingle, Majungaella Grékoff, "Sondagella"Dingle and species of Procytherura Whatley and Eucytherura Müller, which are strictly austral in their distribution, have proved to beuseful tools in the paleogeographical reconstructions related with the Gondwana breakup. The coeval occurrence of the genus Paradoxorhyncha Chapman inwestern Australia, southwestern Madagascar and western Argentina indicates that it migrated along the southern shores of Gondwana during the early Bajocian. Upto the present, the record of Paradoxorhyncha constitutes the earliest gondwanine affinity in Argentina. In the early Cretaceous, the coeval records of some especies of Rostrocytheridea, Procytherura y "Sondagella"indicate close links with South Africa supporting the existence of a southernGondwana seaway.

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How to Cite
Ballent, S. (2009). Gondwaninc affinities of the Jurassic andLower Cretaceous marine ostracods (Crustacea) from the Neuquén Basin, Argentina. Revista De La Asociación Geológica Argentina, 65(2), 311-321. Retrieved from https://revista.geologica.org.ar/raga/article/view/1252
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