<?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>S1405-33222019000100121</article-id>
<article-id pub-id-type="doi">10.18268/bsgm2019v71n1a7</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Taxonomía y biogeografía del extinto lobo gigante, Canis dirus Leidy 1858, en México]]></article-title>
<article-title xml:lang="en"><![CDATA[Taxonomy and biogeography of the extinct giant wolf, Canis dirus Leidy 1858, in Mexico]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ruiz-Ramoni]]></surname>
<given-names><![CDATA[Damián]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Montellano-Ballesteros]]></surname>
<given-names><![CDATA[Marisol]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Geología Departamento de Paleontología]]></institution>
<addr-line><![CDATA[CDMX ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2019</year>
</pub-date>
<volume>71</volume>
<numero>1</numero>
<fpage>121</fpage>
<lpage>137</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-33222019000100121&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-33222019000100121&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-33222019000100121&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen En la década de los años 80 se propuso que el extinto lobo gigante, Canis dirus Leidy, 1858, estaba conformado por dos subespecies: C. dirus dirus Leidy, 1858, que se extendía desde el noreste de Estados Unidos hasta Canadá y C. dirus guildayi Kurtén, 1984, que se distribuía en México y la costa occidental de Estados Unidos. En México, esta clasificación se basó principalmente en ejemplares provenientes de la Cueva de San Josecito, Nuevo León. Con el objetivo de evaluar la asignación taxonómica propuesta para los ejemplares mexicanos,realizamos un análisis morfométrico comparando el material de México con ejemplares de ambas subespecies provenientes de Estados Unidos. México es la segunda región con mayor cantidad de registros fósiles de este cánido, y aunque estos registros no están, en su mayoría, en buen estado, los resultados indican que no hay diferencias entre las dos subespecies, por lo tanto, el material recolectado en México debe de identificarse solamente como Canis dirus.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract In the 80&#8217;s it was proposed that the extinct dire wolf, Canis dirus Leidy, 1858, was conformed by two subspecies: C. dirus dirus Leidy, 1858, which extended from the northeast of the United States to Canada and C. dirus guildayi Kurtén, 1984, which lived in México and the western coast of United States. In Mexico, this classification was based mainly on specimens from the San Josecito Cave, Nuevo León. With the aim of evaluating the proposed taxonomic assignment of the mexican record we performed a morphometric analysis comparing the mexican material with specimens of both subspecies from United States. México is the second region with the most abundant fossil record of this canid and, although most of the material is not well preserved, our results indicate that there are no differences between both subspecies, as a consequence the collected material from México must be identified only as Canis dirus.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Canis dirus dirus]]></kwd>
<kwd lng="es"><![CDATA[Canis dirus guildayi]]></kwd>
<kwd lng="es"><![CDATA[Pleistoceno]]></kwd>
<kwd lng="es"><![CDATA[Norteamérica]]></kwd>
<kwd lng="en"><![CDATA[Canis dirus dirus]]></kwd>
<kwd lng="en"><![CDATA[Canis dirus guildayi]]></kwd>
<kwd lng="en"><![CDATA[Pleistocene]]></kwd>
<kwd lng="en"><![CDATA[North America]]></kwd>
</kwd-group>
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