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Estudios Geologicos
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Estudios Geologicos
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Estudios Geologicos
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Recolector de Ciencia Abierta, RECOLECTA
Article . 1985 . Peer-reviewed
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Evolución de los géneros Mimomys, Arvicola y Allophaiomys (Arvicolidae, Rodentia, Mammalia) en el Plioceno y Pleistoceno de la Península Ibérica

Authors: A. Ruiz Bustos; C. Sesé;

Evolución de los géneros Mimomys, Arvicola y Allophaiomys (Arvicolidae, Rodentia, Mammalia) en el Plioceno y Pleistoceno de la Península Ibérica

Abstract

En el presente trabajo se propone una nueva interpretación de la filogenia de los arvicólidos Mimomys, Arvicola y Allophaiomys como resultado de la comparación de diversas faunas del Plioceno y Pleistoceno inferior y medio de la Península Ibérica. El estudio morfológico de las abundantes poblaciones de Mimomys del yacimiento Plioceno de Moreda, ha permitido, para cada especie, su división en cuatro estadios de desgaste! del primer molar inferior. La evolución de Mimomys está estrechamente relacionada con la variación cualitativa y cuantitativa de dichos estadios de desgaste (de los más primitivos a los más progresivos) a lo largo del tiempo en el seno de las diferentes poblaciones de Mimomys , lo cual nos lleva a proponer el siguiente esquema. de la evolución del género: Durante el Plioceno, dos líneas evolutivas de Mimomys están presentes desde la aparición del género en la Península Ibérica: una de pequeña talla en la que la adquisición de cemento en los molares es progresiva y que está representada por los estadios evolutivos: M. stehlini en el Rusciniense y M. pliocaenicus - M. medasensis en el Plioceno superior. Y otra línea de gran talla representada por M. cappettai en la que el cemento en, los molares existe ya en las poblaciones más primitivas. Al final del Plioceno aparece M. reidi, de pequeña talla, que, por su semejanza morfológica, es muy probablemente el antecesor de M. savini, de mayor talla, del Pleistoceno inferior y medio. Por otra parte, la identidad morfológica y la proximidad biométrica de Allophaiomys deucalion y Allophalomys chalinei con las poblaciones de pequeña talla de Arvicola del Pleistoceno medio (Arvicola mosbachensis), nos llevan a proponer la línea evolutiva: Arvicola deucalion-Arvicola chatinei-Arvicola mosbachensis. Así pues, Mimomys es un género independiente y coetáneo de Arvicola que se extingue durante el Pleistoceno superior. Finalmente, Allophalomys pliocaenicus dará lugar por un proceso cladogenético de diversificación a Microtus y Pitymys.

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Keywords

evolución, plioceno, Pliocene, Evolution, Península Ibérica., Pleistoceno, Rodentia, Plioceno, Península Ibérica, pleistoceno, arvicola, rodentia, Arvicola, mimomys, Iberian Peninsula., allophaiomys, QE1-996.5, península ibérica., Geology, Arvicolidae, Pleistocene, Allophaiomys, Evolución, Mimomys, arvicolidae, Iberian Peninsula

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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