Praenuculidae
... that fossils of the extinct bivalve family Praenuculidae have been found on every continent except Antarctica?
... that fossils of the extinct <a class="mw-redirect" href="./Bivalve" id="mwBUs" rel="mw:WikiLink" title="Bivalve">bivalve</a> family <b id="mwBUw"><a href="./Praenuculidae" id="mwBU0" rel="mw:WikiLink" title="Praenuculidae">Praenuculidae</a></b> have been found on every continent except Antarctica?