99649 artpubuab driver oai:ddd.uab.cat:99649 doi 10.1344/105.000001746 articleid 16965728v10n3p239 eng Doming, L. University of California. Earth and Planetary Sciences Department Trace element analyses indicative of paleodiets in Middle Miocene mammals from the Somosaguas site (Madrid, Spain) Trace element analysis of fossil bone and enamel constitutes a useful tool to characterize the paleoecological behavior of mammals. Up to now, most trace element studies have focused on Plio-Pleistocene fossils. Here, we show that paleodietary inferences based on trace element analyses can be also obtained from ~14Ma old Miocene mammals, in a period of time when important paleoclimatic changes took place due to the development of the East Antarctic ice sheet. Trace element ratio (Ba/Ca, Sr/Ca) analyses have been performed on herbivore tooth enamel (gomphothere Gomphotherium angustidens, equid Anchitherium cf. A. cursor, suid Conohyus simorrensis and ruminants) across three stratigraphic levels from the Somosaguas site (Middle Miocene, Madrid Basin, Spain). Previous scanning electron microscope, rare earth element and stable isotope analyses suggested minimal diagenetic alteration of the tooth enamel samples. Trace element analyses reported here show different paleoecological behavior among the studied fossil taxa. Anchitherium cf. A. cursor shows higher Ba/Ca and Sr/Ca ratios than Gomphotherium angustidens, indicating the equid was a mixed-feeder, while the gomphothere was a browser. The enrichment in Ba/Ca and Sr/Ca ratios in the ruminants is attributed to differences in their gastrointestinal tracts and to a more grazing diet. A high variability in trace element values characterizes the suid Conohyus simorrensis, which is believed to be connected to some degree of omnivory. Tots els drets reservats http://www.europeana.eu/rights/rr-f/ Anglès Article de fons Geochemistry Tooth enamel Diagenesis Paleoecology Herbivores info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion López-Martínez, N. Universidad Complutense de Madrid. Departamento de Paleontología Grimes, S.T. University of Plymouth. School of Geography, Earth and Environmental Sciences Consejo Superior de Investigaciones Científicas (Espanya). Instituto de Geología Económica. Consejo Superior de Investigaciones Científicas (Espanya). Unidad de Investigación de Paleontología Vol. 10, Núm. 3 (Setembre 2012), p. 239-247 Geologica acta 1696-5728 13 4241299 http://ddd.uab.cat/pub/geoact/geoact_a2012m9v10n3/geoact_a2012m9v10n3p239.pdf 0239 247 Setembre 3 10 geoact_a2012m9v10n3 2012 ARTPUB GEOACT UAB file 0 MD5 9c38b333990c3f8871ff2d6b0f94f4e1 4241299 bytestream 1.6 filepath pub/geoact/geoact_a2012m9v10n3/geoact_a2012m9v10n3p239.pdf disk