Natura - nature actualia - actual entities Mundus Plinius - physical world naturalia - natural bodies [crown] Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020] Clade neomura Cavalier-Smith, 1987 Domain Eukaryota Chatton, 1925 - eukaryotes Genus Acanthoica Lohmann (1902) Acanthoica biscayensis Kleijne (1992) Acanthoica quattrospina Lohmann (1903)