Micron Document
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<h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Pygostylia</span></h1>
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<th>Pygostylia
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<p>Links: der reptilienartige Schwanz von <i><a href="Archaeopteryx" title="Archaeopteryx">Archaeopteryx</a></i>.<br> Rechts: der Schwanz eines modernen Vogels. Die letzten Schwanzwirbel sind zu einem Pygostyl fusioniert.
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<th><a href="Erdzeitalter" class="mw-redirect" title="Erdzeitalter">Zeitliches Auftreten</a>
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<td class="taxo-zeit"><a href="Unterkreide" class="mw-redirect" title="Unterkreide">Unterkreide</a> bis heute
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<td class="taxo-zeit">130 bis 0 <a href="Mya_(Zeitskala)" title="Mya (Zeitskala)">Mio. Jahre</a>
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<th><a href="Systematik_(Biologie)" title="Systematik (Biologie)">Systematik</a>
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<td colspan="2"><a href="Coelurosauria" title="Coelurosauria">Coelurosauria</a>
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<td colspan="2"><a href="Maniraptoriformes" title="Maniraptoriformes">Maniraptoriformes</a>
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<td colspan="2"><a href="Maniraptora" title="Maniraptora">Maniraptora</a>
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<td colspan="2"><a href="Paraves" title="Paraves">Paraves</a>
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<td colspan="2"><a href="Avialae" title="Avialae">Avialae</a>
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<td colspan="2">Pygostylia
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<th><a href="Nomenklatur_(Biologie)" title="Nomenklatur (Biologie)">Wissenschaftlicher Name</a>
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<td class="taxo-name">Pygostylia
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<td class="Person"><a href="Sankar_Chatterjee" title="Sankar Chatterjee">Chatterjee</a>, 1997
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<p>Das <a href="Taxon" title="Taxon">Taxon</a> <b>Pygostylia</b> bezeichnet eine Gruppe innerhalb der <a href="Avialae" title="Avialae">Avialae</a> (Vögel im weiteren Sinne), die sich gegenüber anderen Vögeln wie etwa <i><a href="Archaeopteryx" title="Archaeopteryx">Archaeopteryx</a></i> durch einen verkürzten knöchernen Schwanz und die Fusion der letzten Schwanzwirbel zu einem <i><a href="Pygostyl" class="mw-redirect" title="Pygostyl">Pygostyl</a></i> auszeichnet. Weitere Merkmale zur Diagnose der Gruppe sind eine Zahl von sieben oder mehr Beckenwirbeln (<i>Sakralia</i>), die im so genannten <i>Synsacrum</i> miteinander verschmolzen sind, und verlängerte <i>Rabenbeine</i> (<i><a href="Coracoid" title="Coracoid">Coracoide</a></i>).
</p><p>Zu den Pygostylia gehören alle <a href="Rezent#Biologie" title="Rezent">rezenten</a> Vogelgruppen sowie die meisten <a href="Fossil" title="Fossil">fossilen</a>. In Diskussion ist die Zugehörigkeit der <a href="Oviraptorosauria" title="Oviraptorosauria">Oviraptorosaurier</a>: Bei manchen Arten waren die letzten Schwanzwirbel zu einer Pygostyl-artigen Struktur verschmolzen. Einige <a href="Pal%C3%A4ontologe" class="mw-redirect" title="Paläontologe">Paläontologen</a> sehen dieses Merkmal als einen Hinweis dafür, dass Oviraptorosaurier flugunfähige Nachfahren früher (flugfähiger) Vögel waren. Andere bezweifeln, dass das „Pygostyl“ der Oviraptorosaurier zu dem der Vögel <a href="Homologie_(Biologie)" title="Homologie (Biologie)">homolog</a> ist und stellen diese Gruppe zu den <a href="Nichtvogeldinosaurier" title="Nichtvogeldinosaurier">Nichtvogeldinosauriern</a>.
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<div class="mw-heading mw-heading2"><h2 id="Systematik">Systematik</h2></div>
<div class="sieheauch" role="navigation" style="font-style:italic;"><span class="sieheauch-text">Siehe auch</span>: <a href="Systematik_der_V%C3%B6gel" title="Systematik der Vögel">Systematik der Vögel</a></div>
<div class="mw-heading mw-heading3"><h3 id="Äußere_Systematik"><span id=".C3.84u.C3.9Fere_Systematik"></span>Äußere Systematik</h3></div>
<p>Die Verortung der Pygostylia innerhalb der Avialae (Vögel im weiteren Sinne) gibt das folgende Kladogramm nach Zhang et al. (2008)<sup id="cite_ref-zhang-2008_1-0" class="reference"><a href="#cite_note-zhang-2008-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> wieder:
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<td style="min-width:1em; border-bottom:2px solid; vertical-align:bottom; text-align:center;">&nbsp;<a href="Avialae" title="Avialae">Avialae</a>&nbsp;
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<p><i><a href="Epidendrosaurus" title="Epidendrosaurus">Epidendrosaurus</a></i>
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<td style="border-left:2px solid; border-bottom:2px solid; vertical-align:bottom; text-align:center;">&nbsp;<a href="V%C3%B6gel" title="Vögel">Aves</a>&nbsp;
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<p><i><a href="Archaeopteryx" title="Archaeopteryx">Archaeopteryx</a></i>
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<td style="border-left:2px solid; border-bottom:2px solid; vertical-align:bottom; text-align:center;">&nbsp;&nbsp;&nbsp;
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<p><i><a href="Jeholornis" title="Jeholornis">Jeholornis</a></i>
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<td style="border-left:2px solid; border-bottom:2px solid; vertical-align:bottom; text-align:center;">&nbsp;<a href="Avebrevicauda" title="Avebrevicauda">Avebrevicauda</a>&nbsp;
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<p><i><a href="Sapeornis" title="Sapeornis">Sapeornis</a></i>
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<td style="border-left:2px solid; border-bottom:2px solid; vertical-align:bottom; text-align:center;">&nbsp;&nbsp;&nbsp;
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<p>Pygostylia
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<div class="mw-heading mw-heading3"><h3 id="Innere_Systematik">Innere Systematik</h3></div>
<p>Innerhalb der Pygostylia ergibt sich folgende Systematik:<sup id="cite_ref-f+w_2-0" class="reference"><a href="#cite_note-f+w-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>
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<td style="min-width:1em; border-bottom:2px solid; vertical-align:bottom; text-align:center;">&nbsp;&nbsp;<b>Pygostylia</b>&nbsp;&nbsp;
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<p>&nbsp;<a href="Confuciusornithidae" title="Confuciusornithidae">Confuciusornithidae</a>
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<td style="border-left:2px solid; border-bottom:2px solid; vertical-align:bottom; text-align:center;">&nbsp;&nbsp;&nbsp;
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<p>&nbsp;? <a href="Oviraptoridae" class="mw-redirect" title="Oviraptoridae">Oviraptorosaurier</a> (nicht zu Vögeln laut Fastovsky und Weishampel 2005<sup id="cite_ref-f+w_2-1" class="reference"><a href="#cite_note-f+w-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup>)
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<td style="border-left:2px solid; border-bottom:2px solid; vertical-align:bottom; text-align:center;">&nbsp;&nbsp;<a href="Ornithothoraces" title="Ornithothoraces">Ornithothoraces</a>&nbsp;&nbsp;
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<p>&nbsp;<a href="Enantiornithes" title="Enantiornithes">Enantiornithes</a>
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<td style="border-left:2px solid; border-bottom:2px solid; vertical-align:bottom; text-align:center;">&nbsp;&nbsp;<a href="Ornithuromorpha" title="Ornithuromorpha">Ornithuromorpha</a>&nbsp;&nbsp;
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<p>&nbsp;<i><a href="Patagopteryx" title="Patagopteryx">Patagopteryx</a></i>
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<td style="border-left:2px solid; border-bottom:2px solid; vertical-align:bottom; text-align:center;">&nbsp;&nbsp;&nbsp;
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<p>&nbsp;<i><a href="Vorona_(Gattung)" title="Vorona (Gattung)">Vorona</a></i>
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<td style="border-left:2px solid; border-bottom:2px solid; vertical-align:bottom; text-align:center;">&nbsp;&nbsp;<a href="Ornithurae" title="Ornithurae">Ornithurae</a>&nbsp;&nbsp;
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<p>&nbsp;<a href="Hesperornithiformes" title="Hesperornithiformes">Hesperornithiformes</a>
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<td style="border-left:2px solid; border-bottom:2px solid; vertical-align:bottom; text-align:center;">&nbsp;&nbsp;<a href="Carinatae" title="Carinatae">Carinatae</a>&nbsp;&nbsp;
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<p>&nbsp;<a href="Ichthyornis" title="Ichthyornis">Ichthyornithiformes</a>
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<p>&nbsp;<a href="Neornithes" title="Neornithes">Neornithes</a> („Aves“ nach Fastovsky und Weishampel 2005<sup id="cite_ref-f+w_2-2" class="reference"><a href="#cite_note-f+w-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup>)
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<td valign="top"><br><span style="display:none;">Vorlage:Klade/Wartung/Style</span>
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<p>Der Fund von <a href="Baminornis" title="Baminornis">Baminornis</a>, einem Avialen aus dem Oberjura mit fortschrittlichen vogeltypischen Merkmalen, unter anderem einem bereits zum Pygostyl verschmolzenen, kurzen Schwanz, hat 2025 eine wissenschaftliche Diskussion über die Notwendigkeit angeregt, die Pygostylia neu zu definieren.<sup id="cite_ref-chen-wang-dong-et-al-2025_4-0" class="reference"><a href="#cite_note-chen-wang-dong-et-al-2025-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup>
</p>
<div class="mw-heading mw-heading2"><h2 id="Einzelnachweise">Einzelnachweise</h2></div>
<ol class="references">
<li id="cite_note-zhang-2008-1"><span class="mw-cite-backlink"><a href="#cite_ref-zhang-2008_1-0">↑</a></span> <span class="reference-text">Fucheng Zhang, Zhonghe Zhou, Xing Xu, Xiaolin Wang, Corwin Sullivan: <i>A bizarre Jurassic maniraptoran from China with elongate ribbon-like feathers.</i> In: <i>Nature.</i> Bd. 455, Nr. 7216, 2008, S. 1105–1108, <a href="Digital_Object_Identifier" title="Digital Object Identifier">doi</a>:<span class="uri-handle" style="white-space:nowrap"><a rel="nofollow" class="external text" href="https://doi.org/10.1038/nature07447">10.1038/nature07447</a></span>.</span>
</li>
<li id="cite_note-f+w-2"><span class="mw-cite-backlink">↑ <sup><a href="#cite_ref-f+w_2-0">a</a></sup> <sup><a href="#cite_ref-f+w_2-1">b</a></sup> <sup><a href="#cite_ref-f+w_2-2">c</a></sup></span> <span class="reference-text"><a href="David_E._Fastovsky" class="mw-redirect" title="David E. Fastovsky">David E. Fastovsky</a>, <a href="David_B._Weishampel" title="David B. Weishampel">David B. Weishampel</a>: <i>The Evolution and Extinction of the Dinosaurs.</i> 2. Auflage. Cambridge University Press, Cambridge 2005, ISBN 0-521-01046-2.</span>
</li>
<li id="cite_note-3"><span class="mw-cite-backlink"><a href="#cite_ref-3">↑</a></span> <span class="reference-text"><a href="Zhonghe_Zhou" class="mw-redirect" title="Zhonghe Zhou">Zhonghe Zhou</a>: <i>The origin and early evolution of birds: discoveries, disputes and perspectives from fossil evidence.</i> In: <i><a href="Die_Naturwissenschaften" class="mw-redirect" title="Die Naturwissenschaften">Die Naturwissenschaften</a>.</i> Bd. 91, Nr.&nbsp;10, 2004, S.&nbsp;455–471, <a href="https://doi.org/10.1007/s00114-004-0570-4" class="extiw external" title="doi:10.1007/s00114-004-0570-4">doi:10.1007/s00114-004-0570-4</a>.</span>
</li>
<li id="cite_note-chen-wang-dong-et-al-2025-4"><span class="mw-cite-backlink"><a href="#cite_ref-chen-wang-dong-et-al-2025_4-0">↑</a></span> <span class="reference-text">Chen, R., Wang, M., Dong, L. et al. (2025): <i>Earliest short-tailed bird from the Late Jurassic of China.</i> In: Nature 638, S. 441–448. <a href="https://doi.org/10.1038/s41586-024-08410-z" class="extiw external" title="doi:10.1038/s41586-024-08410-z">doi: 10.1038/s41586-024-08410-z</a></span>
</li>
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