Aporometra wilsoni
... that the crinoid Aporometra wilsoni broods its young in cavities in the feathery pinnules on its arms?
... that the <a href="./Crinoid" id="mwGQ" rel="mw:WikiLink" title="Crinoid">crinoid</a> <i id="mwGg"><b id="mwGw"><a href="./Aporometra_wilsoni" id="mwHA" rel="mw:WikiLink" title="Aporometra wilsoni">Aporometra wilsoni</a></b></i> broods its young in cavities in the feathery pinnules on its arms?