Natura - nature actualia - actual entities Mundus Plinius - physical world naturalia - natural bodies Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020] Family Leuconemataceae H. Kaas (1983) 1 Genus Leuconemaᵀ H. Kaas (1983)