Woolacott, Sandro Beania these are benzopoids. Microporella Then to Ovicella see Woolacott & Sando the various positions of ovicell. theories ( Check monograph on Ovicells - is it /forms? ?? Could these be benzopoids or spines ?? Woolacott (in press) considers ovicells develop from double wall fold from zooid re, ovicell & zooid distal to this prev zooid something like this.