Potamon fluviatile
... that a colony of the crab species Potamon fluviatile may have lived in Rome since before the Romans?
... that a colony of the <a href="./Crab" id="mwClY" rel="mw:WikiLink" title="Crab">crab</a> species <i id="mwClc"><b id="mwClg"><a href="./Potamon_fluviatile" id="mwClk" rel="mw:WikiLink" title="Potamon fluviatile">Potamon fluviatile</a></b></i> <i id="mwClo">(pictured)</i> may have lived in <a href="./Rome" id="mwCls" rel="mw:WikiLink" title="Rome">Rome</a> since before the <a href="./Ancient_Rome" id="mwClw" rel="mw:WikiLink" title="Ancient Rome">Romans</a>?