<?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>0256-7024</journal-id>
<journal-title><![CDATA[Revista Geológica de América Central]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Geol. Amér. Central]]></abbrev-journal-title>
<issn>0256-7024</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Costa Rica]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0256-70242022000200019</article-id>
<article-id pub-id-type="doi">10.15517/rgac.v67i0.51593</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Primeros registros fósiles de Condrictios para la Formación Venado, Mioceno Superior, provincia de Alajuela, Costa Rica]]></article-title>
<article-title xml:lang="en"><![CDATA[First fossils records of chondrichthyes from Venado Formation, Upper Miocene, Alajuela Province, Costa Rica]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Argüello-Sáenz]]></surname>
<given-names><![CDATA[Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
<xref ref-type="aff" rid="A a"/>
<xref ref-type="aff" rid="A5"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Laurito]]></surname>
<given-names><![CDATA[César A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Valerio]]></surname>
<given-names><![CDATA[Ana L.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Quesada]]></surname>
<given-names><![CDATA[Gustavo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ulloa]]></surname>
<given-names><![CDATA[Andrés]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
<xref ref-type="aff" rid="A a"/>
<xref ref-type="aff" rid="A5"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Costa Rica (UCR) Escuela Centroamericana de Geología (ECG) ]]></institution>
<addr-line><![CDATA[ San José]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Costa Rica (UCR) Centro de Investigación en Ciencias Geológicas (CICG) ]]></institution>
<addr-line><![CDATA[ San José]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Museo Nacional de Costa Rica (MNCR) Departamento de Historia Natural ]]></institution>
<addr-line><![CDATA[ San José]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Museo Nacional de Costa Rica (MNCR) Departamento de Historia Natural ]]></institution>
<addr-line><![CDATA[ San José]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Grupo Espeleológico Anthros (GEA)  ]]></institution>
<addr-line><![CDATA[ San José]]></addr-line>
<country>Costa Rica</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2022</year>
</pub-date>
<numero>67</numero>
<fpage>19</fpage>
<lpage>28</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S0256-70242022000200019&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S0256-70242022000200019&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S0256-70242022000200019&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Restos dentales de seláceos fueron recolectados en la caverna Gabinarraca, en Venado de San Carlos. Estos fósiles se encontraron en litofacies tipo grainstone, asociados a ambientes de estuario lagunar carbonatado característicos de la Formación Venado de edad Mioceno Superior-Plioceno. Entre los restos de tiburones recuperados destacan ejemplares juveniles de Carcharocles megalodon asociado a ambientes sublitorales y ambientes de aguas salobres. El hallazgo de estos restos permite evidenciar que especies como el Carcharocles megalodon utilizaron las aguas someras del Mioceno donde actualmente se localiza Venado de San Carlos como zona de crianza.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Remains of selachians have been collected at the Gabinarraca cave. These fossils were found in grainstone type lithoacies from the Upper Miocene carbonated lagoon and estuarine sediments of Venado Formation. Among the sharks remains are notorious the juvenile specimens of Carcharocles megalodon associated to a shallow marine and brackish waters environments. The discovery of these remains shows that species such as Carcharocles megalodon used the shallow waters of the Miocene where Venado de San Carlos is currently located as a breeding area.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Chondrichthyes]]></kwd>
<kwd lng="es"><![CDATA[Formación Venado]]></kwd>
<kwd lng="es"><![CDATA[Mioceno Superior]]></kwd>
<kwd lng="es"><![CDATA[cavernas]]></kwd>
<kwd lng="es"><![CDATA[Carcharocles megalodon]]></kwd>
<kwd lng="es"><![CDATA[Costa Rica]]></kwd>
<kwd lng="en"><![CDATA[Chondrichthyes]]></kwd>
<kwd lng="en"><![CDATA[Venado Formation]]></kwd>
<kwd lng="en"><![CDATA[Upper Miocene]]></kwd>
<kwd lng="en"><![CDATA[caves]]></kwd>
<kwd lng="en"><![CDATA[Carcharocles megalodon]]></kwd>
<kwd lng="en"><![CDATA[Costa Rica]]></kwd>
</kwd-group>
</article-meta>
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