An article in <i id="mwAQc"><a href="https://en.wikipedia.org/wiki/Nature_(journal)" id="mwAQg" rel="mw:WikiLink" title="Nature (journal)">Nature</a></i> identifies the <a href="https://en.wikipedia.org/wiki/Ciampate_del_Diavolo" id="mwAQk" rel="mw:WikiLink" title="Ciampate del Diavolo">Ciampate del Diavolo</a> as 350,000-year-old hominid footprints.<sup about="#mwt163" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-31"}}' id="cite_ref-31" rel="dc:references" typeof="mw:Extension/ref"><a href="./March_13#cite_note-31" id="mwAQo" style="counter-reset: mw-Ref 31;"><span class="mw-reflink-text" id="mwAQs">[31]</span></a></sup>
<span class="mw-reference-text" id="mw-reference-text-cite_note-31"><cite about="#mwt160" class="citation journal cs1" id="CITEREFMiettoAvanziniRolandi2003">Mietto, Paolo; Avanzini, Marco; Rolandi, Giuseppe (2003). <a class="external text" href="https://doi.org/10.1038%2F422133a" id="mwCEQ" rel="mw:ExtLink nofollow">"Palaeontology: Human footprints in Pleistocene volcanic ash"</a>. <i id="mwCEU">Nature</i>. <b id="mwCEY">422</b> (6928): 133. <a class="mw-redirect" href="./Bibcode_(identifier)" id="mwCEc" rel="mw:WikiLink" title="Bibcode (identifier)">Bibcode</a>:<a class="external text" href="https://ui.adsabs.harvard.edu/abs/2003Natur.422..133M" id="mwCEg" rel="mw:ExtLink nofollow">2003Natur.422..133M</a>. <a class="mw-redirect" href="./Doi_(identifier)" id="mwCEk" rel="mw:WikiLink" title="Doi (identifier)">doi</a>:<span class="id-lock-free" id="mwCEo" title="Freely accessible"><a class="external text" href="https://doi.org/10.1038%2F422133a" id="mwCEs" rel="mw:ExtLink nofollow">10.1038/422133a</a></span>. <a class="mw-redirect" href="./ISSN_(identifier)" id="mwCEw" rel="mw:WikiLink" title="ISSN (identifier)">ISSN</a><span id="mwCE0" typeof="mw:Entity"> </span><a class="external text" href="https://www.worldcat.org/issn/0028-0836" id="mwCE4" rel="mw:ExtLink nofollow">0028-0836</a>. <a class="mw-redirect" href="./PMID_(identifier)" id="mwCE8" rel="mw:WikiLink" title="PMID (identifier)">PMID</a><span id="mwCFA" typeof="mw:Entity"> </span><a class="external text" href="https://pubmed.ncbi.nlm.nih.gov/12634773" id="mwCFE" rel="mw:ExtLink nofollow">12634773</a>. <a class="mw-redirect" href="./S2CID_(identifier)" id="mwCFI" rel="mw:WikiLink" title="S2CID (identifier)">S2CID</a><span id="mwCFM" typeof="mw:Entity"> </span><a class="external text" href="https://api.semanticscholar.org/CorpusID:2396763" id="mwCFQ" rel="mw:ExtLink nofollow">2396763</a>.</cite><span about="#mwt160" class="Z3988" id="mwCFU" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&amp;rft.genre=article&amp;rft.jtitle=Nature&amp;rft.atitle=Palaeontology%3A+Human+footprints+in+Pleistocene+volcanic+ash&amp;rft.volume=422&amp;rft.issue=6928&amp;rft.pages=133&amp;rft.date=2003&amp;rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A2396763%23id-name%3DS2CID&amp;rft_id=info%3Abibcode%2F2003Natur.422..133M&amp;rft.issn=0028-0836&amp;rft_id=info%3Adoi%2F10.1038%2F422133a&amp;rft_id=info%3Apmid%2F12634773&amp;rft.aulast=Mietto&amp;rft.aufirst=Paolo&amp;rft.au=Avanzini%2C+Marco&amp;rft.au=Rolandi%2C+Giuseppe&amp;rft_id=https%3A%2F%2Fdoi.org%2F10.1038%252F422133a&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3AMarch+13"></span></span>