Subgenus Rhizoniera Griessinger, 1971

Definition. Chalinidae with an anisotropic, ladder-like choanosomal skeleton consisting of uni- multispicular ascending primary lines, connected by irregular unispicular secondary lines. Ectosomal skeleton usually absent; if present, consisting only of some vaguely strewn tangentially orientated oxeas. Spongin moderate to absent. Megascleres usually slender oxeas with acerated points. No microscleres (emmended from de Weerdt, 2002). Type species: Reniera rhizophora Vacelet, 1969 .