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Álvarez Sierra, María De Los Ángeles García Paredes, Israel Hoek Ostende, Lars W. van den Montoya, Plinio Ruiz-Sánchez, Francisco J. Peláez Campomanes, Pablo 2023-06-17T22:24:44Z 2023-06-17T22:24:44Z 2017 0375-0442 10.1127/pala/308/2017/127 https://hdl.handle.net/20.500.14352/18474 https://doi.org/10.1127/pala/308/2017/127 https://www.schweizerbart.de/home/start The small mammal assemblages from Alto de Ballester 1 and 2 in the Rubielos de Mora basin represent a unique faunal assemblage from the late early Miocene (Ramblian, MN 3). Together, the assemblages yielded five species of rodents (Peridyromys murinus, P. aff. murinus, P. aquatilis, Pseudotheridomys aff. fejfari and cf. Steneofiber depereti), and nine insectivores (Galericinae indet., Desmanella fejfari, Myxomygale minor, Desmanodon daamsi, Chainodus cf. sulcatus, Heterosorex sp., cf. Oligosorex thauensis, cf. Clapasorex alvarezae, and Paenelimnoecus cf. truyolsi). High abundance and diversity of insectivores, and the presence of a beaver and a dimylid show that the assemblages represent a humid, forested environment. This is in line with the palaeobotanical evidence of the basin. The two Alto de Ballester assemblages, which are very different from other Ramblian faunas, show that there was a variety of ecosystems on the Iberian Peninsula at this period, probably drier in the inland and more humid near the coastal zone. eng restricted access Alto de Ballester, biogeographical consequences of atypical MN 3 micromammal assemblages from eastern Spain journal article