cushion stars
... that juvenile cushion stars look so different from their seniors that they were thought to belong to a species in a different biological family?
... that juvenile <b id="mwD_k"><a href="./Culcita_novaeguineae" id="mwD_o" rel="mw:WikiLink" title="Culcita novaeguineae">cushion stars</a></b> look so different from their seniors that they were thought to belong to a <a href="./Species" id="mwD_s" rel="mw:WikiLink" title="Species">species</a> in a different <a href="./Family_(biology)" id="mwD_w" rel="mw:WikiLink" title="Family (biology)">biological family</a>?