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      <title>Escala del tiempo geológico. by Nuria Mancilla Cozano</title>
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      <description>Hecho por Rafa, Gerardo y  Nuria.</description>
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      <pubDate>2022-05-19 07:42:17 UTC</pubDate>
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         <title>Hádico</title>
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         <description><![CDATA[<div>- Formación de la Tierra por acreción de planetesimales.<br>- Formación del S.S.</div>]]></description>
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         <pubDate>2022-05-19 07:47:57 UTC</pubDate>
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         <title>Arcaico</title>
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         <description><![CDATA[<div>- Primeras bacterias quimiosintéticas.<br>- Primeras formas de vida unicelulares.<br>-Primeras moléculas de ARN autorreplicante.</div>]]></description>
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         <pubDate>2022-05-19 07:49:26 UTC</pubDate>
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         <title>Proterozoico</title>
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         <description><![CDATA[<div>- Glaciaciones "bola de nieve".<br>- Supercontinente llamado Rodinia que se fragmentó.<br>- Primeros seres vivos pluricelulares.<br>- Atmósfera rica en O2 por acción de bacterias fotosintéticas.</div>]]></description>
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         <pubDate>2022-05-19 07:49:38 UTC</pubDate>
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         <title>Cámbrico </title>
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         <description><![CDATA[<div>- Extensiones masivas Cámbrico-Ordovícico.<br>- Explosión cámbrica. Dominan los invertebrados.</div>]]></description>
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         <pubDate>2022-05-19 07:50:01 UTC</pubDate>
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         <title>Ordovícico</title>
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         <description><![CDATA[<div>- Extinciones masivas Ordovícico - Silúrico.<br>- Primeros peces sin mandíbula (agnatos).</div>]]></description>
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         <pubDate>2022-05-19 07:50:28 UTC</pubDate>
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         <title>Silúrico</title>
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         <description><![CDATA[<div>- Primeras plantas terrestres: Pteridofitas.</div>]]></description>
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         <pubDate>2022-05-19 07:50:45 UTC</pubDate>
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         <title>Devónico</title>
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         <description><![CDATA[<div>- Primeros anfibios en tierra.<br>- Plantas con semillas: coníferas.</div>]]></description>
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         <pubDate>2022-05-19 07:50:58 UTC</pubDate>
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         <title>Carbonífero</title>
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         <description><![CDATA[<div>- Orogenia hercínica.<br>- Bosques de helechos.<br>- Árboles grandes primitivos.</div>]]></description>
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         <pubDate>2022-05-19 07:51:23 UTC</pubDate>
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         <title>Pérmico</title>
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         <description><![CDATA[<div>-&nbsp; Extinción masiva por intenso efecto invernadero.<br>- Primeros reptiles y abundantes insectos.<br>- Formación Pangea.</div>]]></description>
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         <pubDate>2022-05-19 07:51:37 UTC</pubDate>
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         <title>Triásico</title>
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         <link>https://padlet.com/nmancoz2106/3q8wrandx8lfj1x2/wish/2190927098</link>
         <description><![CDATA[<div>- Extinción masiva Triásico - Jurásico.<br>- Fragmentación Pangea.</div>]]></description>
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         <pubDate>2022-05-19 07:51:58 UTC</pubDate>
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         <title>Jurásico</title>
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         <link>https://padlet.com/nmancoz2106/3q8wrandx8lfj1x2/wish/2190927374</link>
         <description><![CDATA[<div>- Mamíferos marsupiales y primeras aves.<br>- Primeros dinosaurios y mamíferos ovíparos.</div>]]></description>
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         <pubDate>2022-05-19 07:52:10 UTC</pubDate>
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         <title>Cretácico</title>
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         <description><![CDATA[<div>- Extinción masiva por colisión de asteroide.<br>- Primeras plantas con flores: angiospermas.<br>- Máximo de los dinosaurios.</div>]]></description>
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         <pubDate>2022-05-19 07:52:24 UTC</pubDate>
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         <title>Paleógeno</title>
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         <description><![CDATA[<div>- Familias modernas de animales y plantas.<br>- Continentes con el aspecto actual.<br>- Orogenia alpina.</div>]]></description>
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         <pubDate>2022-05-19 07:52:54 UTC</pubDate>
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         <title>Neógeno</title>
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         <description><![CDATA[<div>- Clima similar al actual.<br>- Desecación del Mediterráneo.<br><br></div>]]></description>
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         <pubDate>2022-05-19 07:53:11 UTC</pubDate>
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         <title>Cuaternario</title>
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         <description><![CDATA[<div>-&nbsp; Evolución del hombre moderno.<br>-  Ciclos de glaciaciones.</div>]]></description>
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         <pubDate>2022-05-19 07:53:39 UTC</pubDate>
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