<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>1405-3322</journal-id>
<journal-title><![CDATA[Boletín de la Sociedad Geológica Mexicana]]></journal-title>
<abbrev-journal-title><![CDATA[Bol. Soc. Geol. Mex]]></abbrev-journal-title>
<issn>1405-3322</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Geológica Mexicana A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1405-33222020000100105</article-id>
<article-id pub-id-type="doi">10.18268/bsgm2020v72n1a141019</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Taxonomía y hábito alimentario de ejemplares de Mammuthus columbi (Proboscidea: Elephantidae) del centro y sur de México]]></article-title>
<article-title xml:lang="en"><![CDATA[Taxonomy and dietary behavior of Mammuthus columbi (Proboscidea: Elephantidae) from central and southern Mexico]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bravo-Cuevas]]></surname>
<given-names><![CDATA[Victor Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ortiz-Caballero]]></surname>
<given-names><![CDATA[Elizabeth]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Jiménez-Hidalgo]]></surname>
<given-names><![CDATA[Eduardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Barrón-Ortiz]]></surname>
<given-names><![CDATA[Christina I.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Theodor]]></surname>
<given-names><![CDATA[Jessica M.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma del Estado de Hidalgo Área Académica de Biología Museo de Paleontología]]></institution>
<addr-line><![CDATA[Pachuca Hidalgo]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma del Estado de Hidalgo Área Académica de Biología ]]></institution>
<addr-line><![CDATA[Pachuca Hidalgo]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad del Mar Instituto de Recursos Laboratorio de Paleobiología]]></institution>
<addr-line><![CDATA[Puerto Escondido Oaxaca]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Royal Alberta Museum  ]]></institution>
<addr-line><![CDATA[Alberta ]]></addr-line>
<country>Canada</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,University of Calgary Faculty of Science Department of Biological Sciences]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Canada</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2020</year>
</pub-date>
<volume>72</volume>
<numero>1</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-33222020000100105&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-33222020000100105&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-33222020000100105&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN El trabajo paleontológico desarrollado en los últimos años en las localidades pleistocénicas tardías (Rancholabreano) de los estados de Hidalgo, Puebla y Oaxaca permitió recuperar una muestra importante de ejemplares de proboscídeos, la cual consiste de fragmentos craneales, molares y diversos elementos del postcráneo, recolectados de sedimentos fluviolacustres. Este material fue identificado como Mammuthus columbi. Con base en la posición dental y la edad en años de elefante africano estimada para los molares, la muestra estudiada representa 15 o 16 individuos; en Oaxaca están representados entre siete u ocho individuos, y en Puebla e Hidalgo están representados al menos cuatro individuos en cada estado. La categoría de edad mejor representada es la de adultos maduros (&#8805; 30 años), seguida de los adolescentes (3 a 17 años). La frecuencia lamelar (&#8804; 5) y el grosor del esmalte (&#8805; 2.4 mm) de algunos elementos indica la presencia de al menos un macho adulto y sexualmente activo en las muestras de cada uno de los estados donde se recuperaron los ejemplares. Por su parte, el análisis de microdesgaste de algunos individuos evidenció un mayor número de rayones que de fosas y una frecuencia elevada de rayones gruesos. Este patrón de microdesgaste indica un hábito alimentario mixto con énfasis en recursos abrasivos. De manera indirecta, la condición alimentaria mixta de estos individuos de M. columbi indica la presencia de zonas abiertas, probablemente cubiertas por pastos, arbustos y herbáceas, y zonas de vegetación cerrada (áreas arboladas) en lo que ahora es la porción del sureste de Hidalgo, la Cuenca de Valsequillo en Puebla, así como en la Mixteca Alta Oaxaqueña durante el Pleistoceno tardío.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Paleontological work carried out during the past years in the late Pleistocene (Rancholabrean) localities of Hidalgo, Puebla and Oaxaca states allowed the recovery of an important sample of proboscidean specimens, which consists of skull fragments, teeth, and several postcranial bones, collected from fluviolacustrine sediments. This material was identified as Mammuthus columbi. Based on tooth position and the estimated age in African elephant years, the sample studied represents 15 or 16 individuals; seven or eight from Oaxaca, and at least four from each locality of Puebla and Hidalgo. The best-represented age category is that of mature adults (&#8805; 30 years), followed by adolescents (3 to 17 years). Lamellar frequency (&#8804; 5) and enamel width (&#8805; 2.4 mm) indicate the presence of at least one adult male sexually mature in each of the Mexican states from where the specimens were recovered. On the other hand, the microwear analysis of some of the individuals studied showed a higher number of scratches compared to the pits and a high frequency of wide scratches. This microwear pattern is indicative of a mixed-feeding dietary habit with a high proportion of abrasive resources intake. Indirectly, the mixed-feeder condition of these M. columbi individuals indicates the presence of open areas, probably covered with grasses, bushes and herbs and closed-vegetation areas (with trees), in what now is the southeastern portion of Hidalgo, the Valsequillo basin in Puebla and the Mixteca Alta in Oaxaca during the late Pleistocene.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Mammuthus]]></kwd>
<kwd lng="es"><![CDATA[Hidalgo]]></kwd>
<kwd lng="es"><![CDATA[Puebla]]></kwd>
<kwd lng="es"><![CDATA[Oaxaca]]></kwd>
<kwd lng="es"><![CDATA[Pleistoceno]]></kwd>
<kwd lng="es"><![CDATA[Taxonomía]]></kwd>
<kwd lng="es"><![CDATA[Microdesgaste]]></kwd>
<kwd lng="en"><![CDATA[Mammuthus]]></kwd>
<kwd lng="en"><![CDATA[Hidalgo]]></kwd>
<kwd lng="en"><![CDATA[Puebla]]></kwd>
<kwd lng="en"><![CDATA[Oaxaca]]></kwd>
<kwd lng="en"><![CDATA[Pleistocene]]></kwd>
<kwd lng="en"><![CDATA[Taxonomy]]></kwd>
<kwd lng="en"><![CDATA[Microwear]]></kwd>
</kwd-group>
</article-meta>
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