<?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>1026-8774</journal-id>
<journal-title><![CDATA[Revista mexicana de ciencias geológicas]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. cienc. geol]]></abbrev-journal-title>
<issn>1026-8774</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Instituto de Geología]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1026-87742005000300401</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[A new lithographic limestone deposit in the Upper Cretaceous Austin Group at El Rosario, county of Múzquiz, Coahuila, northeastern Mexico]]></article-title>
<article-title xml:lang="es"><![CDATA[Un nuevo depósito de caliza litográfica en el Grupo Austin del Cretácico Superior en El Rosario, municipio de Múzquiz, Coahuila, noreste de México]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Stinnesbeck]]></surname>
<given-names><![CDATA[Wolfgang]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ifrim]]></surname>
<given-names><![CDATA[Christina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Schmidt]]></surname>
<given-names><![CDATA[Harald]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rindfleisch]]></surname>
<given-names><![CDATA[Anja]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Buchy]]></surname>
<given-names><![CDATA[Marie-Céline]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Frey]]></surname>
<given-names><![CDATA[Eberhard]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González-González]]></surname>
<given-names><![CDATA[Arturo H.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vega]]></surname>
<given-names><![CDATA[Francisco J.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cavin]]></surname>
<given-names><![CDATA[Lionel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Keller]]></surname>
<given-names><![CDATA[Gerta]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Smith]]></surname>
<given-names><![CDATA[Krister T.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universität Karlsruhe Geologisches Institut, Postfach ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Germany</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Geowissenschaftliche Abteilung Staatliches Museum für Naturkunde ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Germany</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Museo del Desierto  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Geología ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,The Natural History Museum Department of Palaeontology ]]></institution>
<addr-line><![CDATA[London ]]></addr-line>
<country>UK</country>
</aff>
<aff id="Af6">
<institution><![CDATA[,Princeton University Department of Geosciences ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>USA</country>
</aff>
<aff id="Af7">
<institution><![CDATA[,Yale University Department of Geology and Geophysics ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>USA</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2005</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2005</year>
</pub-date>
<volume>22</volume>
<numero>3</numero>
<fpage>401</fpage>
<lpage>418</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1026-87742005000300401&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1026-87742005000300401&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1026-87742005000300401&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT At El Rosario, 170 km WNW of Múzquiz in northern Coahuila, Mexico, alternating evenly layered platy limestone and fissile marly limestone of late Turonian-early Coniacian age (Late Cretaceous) contain vertebrate fossils with exceptionally well-preserved anatomical details of their soft tissues, as well as abundant ammonoids, inoceramids and other invertebrates. Deposition was in an open marine shelf environment near the southern opening of the Western Interior Seaway, several hundreds of kilometers south of the North American coastline, in water depths of at least 50-100 m. The present research intends to highlight the enormous preservational potential of this new conservation deposit (Konservat-Lagerstätte) and to analyze the paleoenvironmental conditions present at this locality. Our preliminary data suggest that the El Rosario fossil deposit is a combined result of anoxic bottom conditions, early diagenetic phosphatization, and rapid burial in a soft, micritic lime mud.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN En El Rosario, aproximadamente a 170 km al WNW de Múzquiz, en la parte norte del Estado de Coahuila, México, una alternancia de calizas en laja y calizas margosas hojeadas de edad Turoniano tardío y Coniaciano temprano (Cretácico Tardío) contiene fósiles de vertebrados con preservación excepcional que incluye sus partes blandas, así como ammonoideos, inocerámidos y otros invertebrados. Los sedimentos se depositaron en un ambiente de plataforma marina abierta, a cientos de kilómetros de la costa sur del continente norteamericano, con profundidades del agua de por lo menos 50 a 100 m. En el presente trabajo se pretende demostrar el enorme potencial preservacional de este extraordinario depósito (Konservat-Lagerstätte). Nuestros datos preliminares sugieren que la excelente preservación fosilífera en El Rosario es el resultado de una combinación de factores, entre ellos condiciones anóxicas en el fondo marino, una fosfatización diagenética muy temprana, y un enterramiento rápido en un lodo micrítico blando.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Upper Cretaceous]]></kwd>
<kwd lng="en"><![CDATA[fossil preservation]]></kwd>
<kwd lng="en"><![CDATA[Konservat-Lagerstätte]]></kwd>
<kwd lng="en"><![CDATA[limestone]]></kwd>
<kwd lng="en"><![CDATA[Coahuila]]></kwd>
<kwd lng="en"><![CDATA[Mexico]]></kwd>
<kwd lng="es"><![CDATA[Cretácico Superior]]></kwd>
<kwd lng="es"><![CDATA[preservación de fósiles, Konservat-Lagerstätte, caliza, Coahuila, México]]></kwd>
</kwd-group>
</article-meta>
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