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<p style="text-align: center;"><span style="color: #800000; font-size: 10pt;"><span class="st"><strong>&nbsp;</strong></span></span> </p>
<p style="text-align: center;"><span style="color: #800000; font-size: 10pt;"><span class="st"><strong>Ordre des Crocodylia</strong></span></span> <span style="color: #800000; font-size: 8pt;"><span class="st"><strong>GMELIN, 1789</strong></span></span> </p>
<p style="text-align: center;"><span style="color: #800000; font-size: 10pt;"><span class="st"><strong>Sous-ordre des Eusuchia</strong></span></span> <span style="font-size: 10pt;"><span style="color: #800000;"><span class="st"><strong><span style="font-size: 8pt;">HUXLEY, 1875</span></strong></span></span></span> </p>
<p style="text-align: center;"><span style="color: #800000; font-size: 10pt;"><span class="st"><strong>Super-famille des Alligato</strong></span></span><span style="color: #800000;"><span class="st"><strong><span style="font-size: 10pt;">roidea</span></strong></span></span> <span style="font-size: 10pt;"><span style="color: #800000;"><span class="st"><strong><span style="font-size: 8pt;">GRAY, 1844</span></strong></span></span></span> </p>
<p style="text-align: center;"><span style="font-size: 10pt;"><span style="color: #800000;"><span class="st"><strong>Famille des Diplocynodontidae <span style="font-size: 8pt;">(BROCHU, 1999)</span></strong></span></span></span> </p>
<p style="text-align: center;"><span style="font-size: 10pt;"><span style="color: #800000;"><span class="st"><strong>Genre <em>Diplocynodon <span style="font-size: 8pt;">POMEL, 1847</span></em> <span style="font-size: 8pt;">(genre &eacute;teint)</span></strong></span></span></span> </p>
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<p style="text-align: center;"><strong><span style="font-size: 10pt;"><span style="color: #ff0000;">(</span></span> <span style="color: #ff0000;">En travaux)</span></strong> </p>
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<p style="text-align: justify;"><span style="font-size: 8pt;">&nbsp;</span><a class="nopopup" onclick="return !window.open(this);" href="http://idata.over-blog.com/3/94/10/62/Reptiles/Diplocynodon-sp--dent-02-ter.jpg"><img height="152" width="150" src="http://img.over-blog.com/150x152/3/94/10/62/Reptiles/Diplocynodon-sp--dent-02-ter.jpg" alt="Diplocynodon-sp--dent-02-ter.jpg" class="GcheTexte" /></a> </p>
<p style="text-align: justify;">&nbsp;&nbsp; Le genre Diplocynodon est largement repr&eacute;sent&eacute; en Europe depuis l'Eoc&egrave;ne moyen et jusqu'au Mioc&egrave;ne moyen (1). </p>
<p style="text-align: justify;"><br />Le genre dispara&icirc;t&nbsp;de l'Europe centrale&nbsp; et de la France (Sansan)&nbsp; durant MN6 - (13.2 Ma) (2), mais on le retrouve sur la p&eacute;ninsule ib&eacute;rique et dans le sud-est de l'Europe jusqu'au d&eacute;but du Mioc&egrave;ne sup&eacute;rieur - MN9 - (de 9,7 &agrave; 11,1 Ma). </p>
<p style="text-align: justify;"><br />Il est donc &eacute;vident que, durant ces 4 Ma qui s&eacute;pare MN6 de MN9,&nbsp; <em>Diplocynodon</em> a migr&eacute; g&eacute;ographiquement vers le Sud&nbsp; pour des raisons qui sont&nbsp; probablement li&eacute;es&nbsp;&agrave; la brusque chute de temp&eacute;rature enregistr&eacute;e &agrave; la fin de la premi&egrave;re moiti&eacute; du&nbsp;Serravalien sous les pal&eacute;olatitudes qui lui &eacute;taient devenues d&eacute;favorables(3). </p>
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<p style="text-align: justify;"><br /><em>(1) Les Diplocynodon (Reptilia, Crocodylia) de l'Orl&eacute;anien (Miocene inf&eacute;rieur &agrave; moyen) de France.</em><br /><em>Ginsburg, L., Bulot, C., 1997 - N. Jahrb. Geol. Pal&auml;ontol., Mon.heft. 1999 (6), 321-330.</em> </p>
<p style="text-align: justify;"><br /><em>(2) High-resolution mammal biostratigraphy in the Middle Miocene continental record of Switzerland (Upper Freshwater Molasse, MN4-MN9, 17-10 Ma).</em><br /><em>K&auml;lin, D., Kempf, O., 2002.&nbsp; Internationale Senckenberg Konferenz des Forschungsinstitutes und Naturmuseum Senckenberg, "The Middle Miocene crisis", EEDEN-meeting, 14-16 November, Frankfurt am Main, 67</em> </p>
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<p style="text-align: justify;"><em>(3)</em> <em><span style="font-family: Advm1046a; font-size: 18pt;" lang="JA"><span style="font-family: Advm1046a; font-size: 18pt;" lang="JA"><span style="font-size: 10pt;">The Miocene Climatic Optimum:</span></span></span></em> <em><span style="font-family: Advm1046a; font-size: 18pt;" lang="JA"><span style="font-size: 10pt;">evidence from ectothermic vertebrates of Central Europe.</span></span></em> </p>
<p style="text-align: justify;">&nbsp; <em><span style="font-family: Advm1046a; font-size: 14pt;" lang="JA"><span style="font-size: 10pt;">Madelaine B&ouml;hme</span></span></em> </p>
<p><em><span style="font-family: Advm1046a; font-size: 14pt;" lang="JA"><span style="font-family: Advm1046a; font-size: 14pt;" lang="JA"><span style="font-size: 10pt;">&nbsp;</span></span></span><span style="font-size: 10pt;">Palaeogeography, Palaeoclimatologie, Palaeoecology 195 (2003) 389-401</span></em> </p>
<p><em><span style="font-family: Advm1046a; font-size: 14pt;" lang="JA"><span style="font-family: Advm1046a; font-size: 14pt;" lang="JA"><span style="font-family: Advm1046a; font-size: 14pt;" lang="JA"><span style="font-size: 10pt;">&nbsp;</span></span></span><span style="font-size: 10pt;">Elsevier Science</span></span></em> </p>
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