Geograpsus severnsi
... that Geograpsus severnsi is the first crab species known to have become extinct?
... that <i id="mwAqA"><b id="mwAqE"><a href="./Geograpsus_severnsi" id="mwAqI" rel="mw:WikiLink" title="Geograpsus severnsi">Geograpsus severnsi</a></b></i> is the first <a href="./Crab" id="mwAqM" rel="mw:WikiLink" title="Crab">crab</a> species known to have <a href="./Extinction" id="mwAqQ" rel="mw:WikiLink" title="Extinction">become extinct</a>?