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Amler, M.R.W.; Winkler Prins, C.F.. |
The Lower Carboniferous bivalves of the Vegamián and Genicera formations are described, followed by a brief discussion on palaeoenvironmental and palaeogeographical aspects. The black shales of the Vegamián Fm. (Tournaisian) yield a peculiar association of euchondriid taxa (Euchondria wagneri sp. nov., Eu. cf. losseni, Eu. cf. bilstonensis, and euchondriids under open nomenclature) and Chaenocardia? carbonifera. This association displays Central-European Kulm-type character, but other typical taxa from the German Kulm are missing in this environment, especially the posidoniids, actinopteriids and pterinopectinids. The light coloured sediments of the Genicera (or Alba) Fm. yield bivalves in slightly greater diversity which include rare palaeotaxodonts,... |
Tipo: Article / Letter to the editor |
Palavras-chave: Bivalves; Lower Carboniferous; Vegamián Fm.; Genicera Fm.; Ricacabiello Fm.; Cantabrian Mts; 42.73; 38.22. |
Ano: 1999 |
URL: http://www.repository.naturalis.nl/record/219076 |
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Amler, M.R.W.. |
During a field trip to the Peña-Corada Unit of the southernmost Esla region of the Cantabrian Mountains in 1927, the German stratigrapher Wilhelm Kegel sampled brachiopods and bivalves from a section in the Laoz valley near La Ercina. The stratigraphic position is believed to be part of the Nocedo Formation of Frasnian age. This fauna includes poorly preserved steinkerns of a near-shore bivalve fauna that was prepared for publication including labels and proposed names, but never published. The fauna represents only a very small and random part of the former community. But as information on Frasnian bivalves is scarce, the few specimens add important information on the distribution and palaeogeographic occurrence of near-shore, that is, Rhenish Facies... |
Tipo: Article / Letter to the editor |
Palavras-chave: Bivalvia; Rhenish Facies; Nocedo Formation; Frasnian; Cantabrian Mountains; Iberia; Wilhelm Kegel; 38.22. |
Ano: 2010 |
URL: http://www.repository.naturalis.nl/record/361952 |
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