[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Phylum Echinodermata Bruguière, 1789 - echinoderms
     Class Asteroidea Blainville, 1830 - sea stars
       Order Valvatida Perrier, 1884
         Family Poraniidae Perrier, 1894
           1 Genus Chondraster Verrill, 1895
           2 Genus Marginaster Perrier, 1881
           3 Genus Porania Gray, 1840
           4 Genus Poraniomorpha Danielssen & Koren, 1880
           5 Genus Tylaster Danielssen & Koren, 1881