Natura - nature actualia - actual entities Mundus Plinius - physical world naturalia - natural bodies Biota "neomura" Domain Eukaryota Chatton, 1925 - eukaryotes "neokaryotes" - mitochondrial eukaryotes Class Jakobea Cavalier-Smith, 1997 [monotypic] 1 Order Jakobidaᵀ Cavalier-Smith, 1993