<?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>2007-4298</journal-id>
<journal-title><![CDATA[Botanical Sciences]]></journal-title>
<abbrev-journal-title><![CDATA[Bot. sci]]></abbrev-journal-title>
<issn>2007-4298</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Botánica de México A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-42982021000300628</article-id>
<article-id pub-id-type="doi">10.17129/botsci.2802</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Fossil record of Celastraceae: evaluation and potential use in molecular calibrations]]></article-title>
<article-title xml:lang="es"><![CDATA[Registro fósil de Celastraceae: evaluación y uso potencial en calibraciones moleculares]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández-Damián]]></surname>
<given-names><![CDATA[Ana Lilia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gómez-Acevedo]]></surname>
<given-names><![CDATA[Sandra Luz]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cevallos-Ferriz]]></surname>
<given-names><![CDATA[Sergio Rafael Silvestre]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,aff1  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional Autónoma de México Facultad de Estudios Superiores Iztacala Unidad de Morfología y Función]]></institution>
<addr-line><![CDATA[Tlalnepantla Estado de México]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<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>09</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2021</year>
</pub-date>
<volume>99</volume>
<numero>3</numero>
<fpage>628</fpage>
<lpage>642</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-42982021000300628&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-42982021000300628&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-42982021000300628&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Background: Celastraceae is a morphologically heterogeneous family. For this reason, the inclusion of some taxa within this group is controversial. Recently this problem has become significant since its fossil record is recognized as an important source of information for evolutionary studies, especially those using molecular clocks which require a robust, reliable fossil record.  Questions: What are the most reliable fossil records of Celastraceae? What morphological characters are used to assign fossils in the family?  Study site and dates: Compilation of records contained in paleontological databases, and paleobotanical literature, covering publications from 1869 to 2018.  Methods: Published information on the Celastraceae fossil record was compiled and analyzed using the most recent classification system and specialized literature on the family.  Results:  A total of 168 fossil records were examined, of which nine are proposed for use as molecular clock calibration points. Each specimen has a description based on a character set used for its identification, a photograph and/or illustration, their geological age is well supported, their geographic origin is known, and the specimens are in accredited home institutions with publicly accessible collections.  Conclusions:  The identification and establishment of relationships between fossil and extant taxa have important limitations that depend on the critical interpretation of morphology in a phylogenetic context. Therefore, it is essential to incorporate only those morphological studies in Celastraceae that help clarify its fossil record.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Antecedentes:  Celastraceae es una familia morfológicamente heterogénea. Por esta razón, la inclusión de algunos taxones actuales dentro de este grupo es controversial. Recientemente, este problema se ha acentuado en su registro fósil, considerado como una fuente importante de información para estudios evolutivos, como es el caso del reloj molecular, que requiere de un registro fósil confiable y robusto.  Preguntas:  ¿Cuáles son los registros fósiles más confiables de Celastraceae? ¿Cuáles caracteres morfológicos son usados para asignar fósiles en la familia?  Sitio de estudio y fechas: Recopilación de registros contenidos en bases de datos paleontológicas y literatura paleobotánica, abarcando publicaciones de 1869 hasta el 2018.  Métodos: Se compiló y analizó la información publicada del registro fósil de Celastraceae usando el sistema de clasificación más reciente de la familia, así como literatura especializada del grupo.  Resultados:  De un total de 168 registros fósiles examinados, sólo nueve son considerados como puntos de calibración confiables. Cada uno de los especímenes incluye una descripción del órgano de la planta a través del cual se identificó, una fotografía y/o ilustración, edad geológica y provincia geográfica, así como su acreditación en una institución de resguardo con colecciones públicas accesibles.  Conclusiones:  La identificación y el establecimiento de las relaciones entre los taxones fósiles y actuales son limitantes importantes, y ambas dependen fundamentalmente de la interpretación de los caracteres morfológicos en un contexto filogenético. Por esta razón, es fundamental realizar estudios morfológicos profundos en Celastraceae, estos podrían permitir el esclarecimiento de su registro fósil.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[fossil plants]]></kwd>
<kwd lng="en"><![CDATA[morphology]]></kwd>
<kwd lng="en"><![CDATA[reliable record]]></kwd>
<kwd lng="es"><![CDATA[morfología]]></kwd>
<kwd lng="es"><![CDATA[plantas fósiles]]></kwd>
<kwd lng="es"><![CDATA[registros confiables]]></kwd>
</kwd-group>
</article-meta>
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