<?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>S1405-33222021000100003</article-id>
<article-id pub-id-type="doi">10.18268/bsgm2021v73n1a100720</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[A new record of Paramylodon harlani (Owen 1840) (Xenarthra, Pilosa, Mylodontidae) from the late Pleistocene of Valsequillo, Puebla, with comments on its paleobiogeography and paleoecology in Mexico]]></article-title>
<article-title xml:lang="es"><![CDATA[Nuevo registro de Paramylodon harlani (Owen 1840) (Xenarthra, Pilosa, Mylodontidae) del Pleistoceno tardío de Valsequillo, Puebla, con comentarios sobre su paleogeografía y paleoecología en México]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Carbot-Chanona]]></surname>
<given-names><![CDATA[Gerardo]]></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[Jiménez-Moreno]]></surname>
<given-names><![CDATA[Francisco J.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Benítez-Gálvez]]></surname>
<given-names><![CDATA[Enrique]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Secretaría de Medio Ambiente e Historia Natural Dirección de Paleontología Museo de Paleontología "Eliseo Palacios Aguilera"]]></institution>
<addr-line><![CDATA[Tuxtla Gutiérrez Chiapas]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad del Mar Instituto de Recursos Laboratorio de Paleobiología]]></institution>
<addr-line><![CDATA[Campus Puerto Escondido Oaxaca]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Angelópolis  ]]></institution>
<addr-line><![CDATA[Puebla Puebla]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Puebla de Zaragoza  ]]></institution>
<addr-line><![CDATA[Puebla de Zaragoza Puebla]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2021</year>
</pub-date>
<volume>73</volume>
<numero>1</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-33222021000100003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-33222021000100003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-33222021000100003&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Paramylodon harlani was a large ground sloth recorded across North America, from Canada to Mexico. In Mexico, it is known from several late Pleistocene localities, but most of these records just mention the taxon in passing and few specimens have been described or illustrated. In this work, we describe a left tibia from the Valsequillo Basin, Puebla state. Its morphology and measurements allowed us to identify it as Paramylodon harlani, adding a new record for Mexico. In Mexico, P. harlani occurred mainly in the Trans-Mexican Volcanic Belt, central Mexico, with some records in the north and southeastern part of the country. Most localities are located between 1500 to 2000 m.a.s.l. Paleoenvironmental and paleoclimatic inference in some localities of Mexico where P. harlani occurred, showed heterogenous vegetation dominated by grasslands, and agree with the preferred habitat proposed for this species based on localities in the United States. This indicates that P. harlani could inhabit different environments, from grasslands to more wooded areas, and this adaptation allowed it to extend its range from the north to the southeast of Mexico.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN Paramylodon harlani fue un perezoso terrestre de gran tamaño distribuido a través de América del Norte, desde Canadá hasta México). En México se conoce en varias localidades del Pleistoceno tardío, pero la mayoría de esos reportes son sólo menciones y poco material ha sido descrito o ilustrado. En este trabajo describimos una tibia izquierda proveniente de la Cuenca de Valsequillo, Puebla; la morfologíay medidas permiten referirla a Paramylodon harlani, con lo que se añade un nuevo registro para México. Nuestros resultados muestran que P. harlani se encontraba principalmente en la Faja Volcánica Transmexicana, en el centro de México, con algunos registros en el norte y sureste. El mayor número de localidades se ubica entre los 1500 a 2000 msnm. Las inferencias paleoambientales y paleoclimáticas de algunas de las localidades donde se encuentra P. harlani, muestran que existió vegetación heterogénea dominada por pastizales, lo que concuerda con los hábitats propuestos para la especie en localidades de EUA. Esto indica que P. harlani podía habitar diferentes ambientes, desde pastizales hasta zonas más arboladas, y es posible que esa adaptación le haya permitido extenderse desde el norte al sureste de México.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Paramylodon]]></kwd>
<kwd lng="en"><![CDATA[Quaternary]]></kwd>
<kwd lng="en"><![CDATA[late Pleistocene]]></kwd>
<kwd lng="en"><![CDATA[biogeographic corridors]]></kwd>
<kwd lng="en"><![CDATA[habitat]]></kwd>
<kwd lng="es"><![CDATA[Paramylodon]]></kwd>
<kwd lng="es"><![CDATA[Cuaternario]]></kwd>
<kwd lng="es"><![CDATA[Pleistoceno tardío]]></kwd>
<kwd lng="es"><![CDATA[Corredores biogeográficos]]></kwd>
<kwd lng="es"><![CDATA[habitat]]></kwd>
</kwd-group>
</article-meta>
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