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Updated biochronology of the Madrid Basin: species distribution and implications for the Middle Miocene rodent faunas of Spain

AuthorsHernández-Ballarín, Verónica CSIC ORCID ; Peláez-Campomanes, Pablo CSIC ORCID
Issue Date2018
PublisherTaylor & Francis
CitationHistorical Biology 30(3): 305-316 (2018)
AbstractThe works carried out in the Madrid area during the last fifteen years have yielded almost twenty new localities including small-mammals. A taxonomical description of the rodent fauna of the new sites and a revision of those previously published has enabled us to present an updated biostratigraphy and biochronology for the middle and upper Aragonian of the Madrid Basin. Seven local biozones are recognised: Db, Dc, Dd, E, F, G1 and G2. The rodent assemblage of biozone Db is here described for the first time in Madrid. The new finds have also filled poorly-known parts of biozones Dc, Dd, E and F, making now the rodent assemblages of biozones Dc and E from Madrid one of the most complete and best-represented records. Considering the faunal variability in biozone G1 in the Madrid Basin, we propose a new definition for it. The comparison of the rodent assemblages between the Madrid and Calatayud-Montalbán basins points out that both share several similarities in their taxonomical distributions, although with less diverse faunas in Madrid. A relative impoverishment in taxa of complicated dental pattern in Madrid could be interpreted as due to differences in the local environment with Calatayud.
Publisher version (URL)http://dx.doi.org/10.1080/08912963.2016.1276580
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