<?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>S1405-33222020000200005</article-id>
<article-id pub-id-type="doi">10.18268/bsgm2020v72n2a280819</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Columnar ossicles of Permian crinoids, including two new genera, from the Grupera Formation (Asselian-Sakmarian) of Chiapas, Mexico]]></article-title>
<article-title xml:lang="es"><![CDATA[Osículos columnares de crinoideos pérmicos, incluidos dos géneros nuevos, de la Formación Grupera (Asseliano-Sakmariano) de Chiapas, México]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Torres-Martínez]]></surname>
<given-names><![CDATA[Miguel A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Villanueva-Olea]]></surname>
<given-names><![CDATA[Rafael]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sour-Tovar]]></surname>
<given-names><![CDATA[Francisco]]></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[Mexico City ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional Autónoma de México Facultad de Ciencias Departamento de Biología Evolutiva]]></institution>
<addr-line><![CDATA[Mexico City ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Nacional Autónoma de México Facultad de Ciencias Museo de Paleontología]]></institution>
<addr-line><![CDATA[Mexico City ]]></addr-line>
<country>Mexico</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>2</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-33222020000200005&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-33222020000200005&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-33222020000200005&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Eleven morphotypes of columnar ossicles of Permian crinoids collected from the Grupera Formation (Asselian&#8210;Sakmarian) are described. Floricyclocion heteromorpha and Cyclo-grupera minor are proposed as new morphogenera and morphospecies. Preserved elements allow relating the depositional paleoenvironment to restricted waters of the inner ramp. The stratigraphical range of Cyclo-caudiculus regularis, Heterostelechus keithi, Lamprosterigma erathense and Cyclocaudex insaturatus is extended from the Pennsylvanian (Upper Carboniferous) to the lower Cisuralian (lower Permian). The record of all parataxa studied is the first in Chiapas, Mexico, and the first formal work on Permian crinoids from the Chicomuselo region. Because the specimens were found in a Permian unit that had been related to the Grandian Province of North America (Texas and New Mexico in USA; Coahuila, Sonora and Chiapas in Mexico; and Palmarito in Venezuela), it is suggested that crinoids should be part of the same paleoprovince.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Se describen 11 morfotipos de osículos columnares de crinoideos pérmicos de la Formación Grupera (Asseliano&#8210;Sakmariano). Floricyclocion heteromorpha y Cyclogrupera minor se proponen como nuevos morfogéneros y morfoespecies. Los elementos conservados permitieron relacionar el paloambiente de depósito con aguas restringidas de la rampa interna. El alcance estratigráfico de Cyclo-caudiculus regularis, Heterostelechus keithi, Lamprosterigma erathense y Cyclocaudex insaturatus se extiende del Pensilvánico (Carbonífero Superior) al Cisuraliano inferior (Pérmico inferior). Todos los para-taxones se registran por primera vez para Chiapas, México, además de que éste es el primer trabajo formal sobre crinoideos pérmicos de la región de Chicomuselo. Debido a que los ejemplares fueron encontrados en una unidad pérmica que ha sido relacionada con la Provincia Grandiana de Norteamérica (Texas y Nuevo México en EUA; Coahuila, Sonora y Chiapas en México; y Palmarito en Venezuela), se sugiere que los crinoideos formarían parte de esta misma paleoprovincia.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Parataxa]]></kwd>
<kwd lng="en"><![CDATA[Floricyclocion]]></kwd>
<kwd lng="en"><![CDATA[Cyclogrupera]]></kwd>
<kwd lng="en"><![CDATA[Asselian&#8210; Sakmarian]]></kwd>
<kwd lng="en"><![CDATA[Grandian Province]]></kwd>
<kwd lng="es"><![CDATA[Parataxones]]></kwd>
<kwd lng="es"><![CDATA[Floricyclocion]]></kwd>
<kwd lng="es"><![CDATA[Cyclogrupera]]></kwd>
<kwd lng="es"><![CDATA[Asseliano&#8210;Sakmariano]]></kwd>
<kwd lng="es"><![CDATA[Provincia Grandiana]]></kwd>
</kwd-group>
</article-meta>
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