A diagram showing four dinosaur skulls that have been referred to the genus <i><a href="https://en.wikipedia.org/wiki/Mamenchisaurus" class="extiw" title="w:Mamenchisaurus">Mamenchisaurus</a></i>. Including the holotype specimens of <i>M. youngi</i> <i>M. jingyanensis</i> and <i>M. sinocanadorum</i>, and a specimen referred to <i>M. hochuanensis</i>.
<dl><dd>• <i>Mamenchisaurus</i> is sometimes considered a 'wastebasket taxon', with numerous questionable species.<sup id="cite_ref-moore2020_1-0" class="reference"><a href="#cite_note-moore2020-1">[1]</a></sup> It is possible that with a revision of the genus that some, or none, of the skulls in this diagram end up in the genus <i>Mamenchisaurus</i>.</dd></dl><dl><dd>• <i>M. youngi</i> (ZDM0083) based on Figure 2 in Pi et al. (1996).<sup id="cite_ref-:0_2-0" class="reference"><a href="#cite_note-:0-2">[2]</a></sup></dd>
<dd>• <i>M. jingyanensis</i> (CV00734) based on Figure 1 in Zhang et al. (1998).<sup id="cite_ref-young&amp;zhao1972_3-0" class="reference"><a href="#cite_note-young&amp;zhao1972-3">[3]</a></sup> Note: Photographs of the reconstructed <i>M. jingyanensis</i> skull on museum mounts and photos of the mandible and maxilla look quite different than the reconstruction in Zhang et al. It is possible that a future reconstruction might differ somewhat than shown here.</dd>
<dd>• <i>M. hochuanensis</i> (ZDM0126) based on the photos available in Ye et al. (2001).<sup id="cite_ref-Yeetal2001_4-0" class="reference"><a href="#cite_note-Yeetal2001-4">[4]</a></sup> Note: Unfortunately, only one skull measurement is provided, a narrow part of the parietal measuring 46 mm. All the images in Ye et al. are said to be in scale to one another, so the bones were scaled to the parietal measurement. ZDM0126 was referred to <i>M. hochuanensis</i> in 2001. However, a phylogenetic study by Moore et al. (2020) cast doubt on this specimen's referral to <i>M. hochuanensis</i>.<sup id="cite_ref-moore2020_1-1" class="reference"><a href="#cite_note-moore2020-1">[1]</a></sup></dd>
<dd>• <i>M. sinocanadorum</i> (IVPP V10603) based on the images in Russel and Zheng (1993).<sup id="cite_ref-RussellZheng1993_5-0" class="reference"><a href="#cite_note-RussellZheng1993-5">[5]</a></sup> Note: A pterygoid bone was illustrated only in dorsal and ventral views, and the orientation of a possible ectopterygoid was not stated, so the lateral views of these bones shown here are speculative and greyed out.</dd></dl><h2><span class="mw-headline" id="References">References</span></h2>
<div class="reflist" style="list-style-type: decimal;">
<ol class="references"><li id="cite_note-moore2020-1"><span class="mw-cite-backlink">↑ <a href="#cite_ref-moore2020_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-moore2020_1-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><cite style="font-style:normal"> (2020). "Osteology of <i>Klamelisaurus gobiensis</i> (Dinosauria, Eusauropoda) and the evolutionary history of Middle–Late Jurassic Chinese sauropods". <i>Journal of Systematic Palaeontology</i> <b>18</b> (16): 1299–1393. <a href="https://en.wikipedia.org/wiki/Digital_object_identifier" class="extiw" title="w:Digital object identifier">DOI</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1080/14772019.2020.1759706">10.1080/14772019.2020.1759706</a>.</cite></span>
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<li id="cite_note-:0-2"><span class="mw-cite-backlink"><a href="#cite_ref-:0_2-0">↑</a></span> <span class="reference-text">PI, L., OU, Y. and YE, Y. 1996. A new species of sauropod from Zigong, Sichuan, Mamenchisaurus youngi. 87–91. In DEPARTMENT OF SPATIAL PLANNING AND REGIONAL ECONOMY (ed.), Publication in Geoscience Contributed to the 30th International Geological Congress. China Economic Publishing House, Beijing.</span>
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<li id="cite_note-young&amp;zhao1972-3"><span class="mw-cite-backlink"><a href="#cite_ref-young&amp;zhao1972_3-0">↑</a></span> <span class="reference-text">Young, C.C., and Zhao, X.-J. (1972). "<i>Mamenchisaurus hochuanensis</i> sp. nov." <i>Institute of Vertebrate Paleontology and Paleoanthropology Monographs</i>, A, 8:1-30.</span>
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<li id="cite_note-Yeetal2001-4"><span class="mw-cite-backlink"><a href="#cite_ref-Yeetal2001_4-0">↑</a></span> <span class="reference-text"><cite style="font-style:normal"> (2001). "New material of <i>Mamenchisaurus hochuanensis</i> from Ziging China". <i>Vertebrata PalAsiatica</i> <b>39</b> (4): 266–271.</cite></span>
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<li id="cite_note-RussellZheng1993-5"><span class="mw-cite-backlink"><a href="#cite_ref-RussellZheng1993_5-0">↑</a></span> <span class="reference-text">Russell, D.A., Zheng, Z. (1993). "A large mamenchisaurid from the Junggar Basin, Xinjiang, People Republic of China." <i>Canadian Journal of Earth Sciences</i>, (30): 2082-2095.</span>
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