000099649 001 __ 99649
000099649 005 __20141121163538.0
000099649 024 8_ $9 driver $9 artpubuab $a oai:ddd.uab.cat:99649
000099649 024 7_ $2 doi $a 10.1344/105.000001746
000099649 035 __ $9 articleid $a 16965728v10n3p239
000099649 041 __ $a eng
000099649 100 __ $a Doming, L. $u University of California. Earth and Planetary Sciences Department
000099649 245 1_ $a Trace element analyses indicative of paleodiets in Middle Miocene mammals from the Somosaguas site (Madrid, Spain)
000099649 520 3_ $a 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.
000099649 540 __ $9 info:eu-repo/semantics/openAccess $a Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l’obra i la creació d’obres derivades, fins i tot amb finalitats comercials, sempre i quan aquestes es distribueixin sota la mateixa llicència que regula l’obra original i es reconegui l’autoria de l’obra original. $u http://creativecommons.org/licenses/by-sa/3.0/es/ 64.
000099649 546 __ $a Anglès
000099649 599 __ $a recerca
000099649 653 1_ $a Geochemistry
000099649 653 1_ $a Tooth enamel
000099649 653 1_ $a Diagenesis
000099649 653 1_ $a Paleoecology
000099649 653 1_ $a Herbivores
000099649 655 _4 $a info:eu-repo/semantics/article
000099649 655 _4 $a info:eu-repo/semantics/publishedVersion
000099649 700 __ $a López-Martínez, N. $u Universidad Complutense de Madrid. Departamento de Paleontología
000099649 700 __ $a Grimes, S.T. $u University of Plymouth. School of Geography, Earth and Environmental Sciences
000099649 710 1_ $a Consejo Superior de Investigaciones Científicas (Espanya). Instituto de Geología Económica.
000099649 710 1_ $a Consejo Superior de Investigaciones Científicas (Espanya).
000099649 710 1_ $a Unidad de Investigación de Paleontología
000099649 773 __ $g Vol. 10, Núm. 3 (Setembre 2012), p. 239-247 $t Geologica acta $x 1696-5728
000099649 856 40 $p 13 $s 4241299 $u http://ddd.uab.cat/pub/geoact/geoact_a2012m9v10n3/geoact_a2012m9v10n3p239.pdf
000099649 973 __ $f 0239 $l 247 $m Setembre $n 3 $v 10 $x geoact_a2012m9v10n3 $y 2012
000099649 980 __ $a ARTPUB $b UAB $b GEOACT