Mesoraphidiidae
... that fossils of the extinct snakefly family Mesoraphidiidae are known mainly from the Northern Hemisphere?
... that fossils of the extinct <a href="./Snakefly" id="mwBn0" rel="mw:WikiLink" title="Snakefly">snakefly</a> family <b id="mwBn4"><a href="./Mesoraphidiidae" id="mwBn8" rel="mw:WikiLink" title="Mesoraphidiidae">Mesoraphidiidae</a></b> are known mainly from the Northern Hemisphere?