<?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>1870-3453</journal-id>
<journal-title><![CDATA[Revista mexicana de biodiversidad]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Mex. Biodiv.]]></abbrev-journal-title>
<issn>1870-3453</issn>
<publisher>
<publisher-name><![CDATA[Instituto de Biología]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1870-34532019000101228</article-id>
<article-id pub-id-type="doi">10.22201/ib.20078706e.2019.90.2927</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Metagonia esquincacanoi sp. nov.: el primer registro fósil de la familia Pholcidae (Arachnida: Araneae) en el ámbar de Chiapas, México]]></article-title>
<article-title xml:lang="en"><![CDATA[Metagonia esquincacanoi sp. nov.: the first fossil record of the family Pholcidae (Arachnida: Araneae) in Chiapas amber, Mexico]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García-Villafuerte]]></surname>
<given-names><![CDATA[Miguel Ángel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Secretaría de Medio Ambiente e Historia Natural Subsecretaría de Biodiversidad y Desarrollo Sustentable Dirección de Paleontología]]></institution>
<addr-line><![CDATA[Tuxtla Gutiérrez Chiapas]]></addr-line>
<country>México</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>90</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1870-34532019000101228&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1870-34532019000101228&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1870-34532019000101228&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen En busca de contribuir al conocimiento de la araneofauna fósil de México, se incluye por primera vez en el registro fósil del ámbar mexicano a la familia de arañas Pholcidae, a través de la descripción de Metagonia esquincacanoi sp. nov., hallado en una pieza de ámbar proveniente del municipio de Simojovel de Allende, Chiapas. La nueva especie es descrita a través de un único ejemplar, macho adulto, perfectamente bien preservado en la resina fosilizada. Este es el registro más antiguo de Metagonia y la edad geológica del género se extiende en 22.8 Ma, en el Mioceno Temprano.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract To contribute to the knowledge of the fossil spiderfauna from Mexican amber, the spider family Pholcidae is included, for the first time, through the description of Metagonia esquincacanoi sp. nov., found in a piece of amber from the municipality of Simojovel de Allende, Chiapas, Mexico. The new species is described through a single specimen, an adult male, perfectly well preserved in the fossilized resin. This is the oldest recorded fossil of Metagonia and it extends the known geological range of the genus in 22.8 My, in the Early Miocene.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Fólsidos]]></kwd>
<kwd lng="es"><![CDATA[Nueva especie]]></kwd>
<kwd lng="es"><![CDATA[Mesoamérica]]></kwd>
<kwd lng="es"><![CDATA[Mioceno-Aquitaniano]]></kwd>
<kwd lng="es"><![CDATA[Pholcinae]]></kwd>
<kwd lng="en"><![CDATA[Pholcids]]></kwd>
<kwd lng="en"><![CDATA[New species]]></kwd>
<kwd lng="en"><![CDATA[Mesoamerica]]></kwd>
<kwd lng="en"><![CDATA[Miocene-Aquitatian]]></kwd>
<kwd lng="en"><![CDATA[Pholcinae]]></kwd>
</kwd-group>
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