Natura - nature actualia - actual entities Mundus Plinius - physical world naturalia - natural bodies Order Pleurastralesᵀ K.R. Mattox & K.D. Stewart Family Pleurastraceaeᵀ K.R. Mattox & K.D. Stewart Genus Pleurastrosarcina H.J. Sluiman & P.C.J. Blommers