Tetrophthalmi
... that four-eyed harvestmen known as Tetrophthalmi once roamed the Earth?
... that four-eyed <a href="./Opiliones" id="mwCIA" rel="mw:WikiLink" title="Opiliones">harvestmen</a> known as <b id="mwCIE"><a href="./Tetrophthalmi" id="mwCII" rel="mw:WikiLink" title="Tetrophthalmi">Tetrophthalmi</a></b> once roamed the Earth?