Características de la fauna de braquiópodos del Toarciense superior en el Sector Central de la Cordillera Ibérica (noroeste de España)
DOI:
https://doi.org/10.3989/egeol.84401-2650Keywords:
Brachiopods, Paleoecology, Paleobiogeography, environmental instability, Faunistic turnover, Jurassic, Upper Toarcian, Iberian Range, Spain.Abstract
Studying brachiopod faunas from the Upper Toarcian beds of the Iberian Range (Central Sector), bring out the few number of species and the local range for the majority of them. In relation with that, populations show characteristics (polymorphism, gregarism and generalism) that suggest an unstable environment, probably produced by the progressive isolation of the basin, the shallowing trend and the tectosedimentary instability quoted by differents authors, As a consequence of this situation there is a faunistic turnover for the brachiopods at this time, that could be the origin of some lineages developped in the Western European Dogger.
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