[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Kingdom Algae L. (1753) see [unranked] Algae
     Phylum Phaeophycota see Class Phaeophyceae Hansgirg (1886)
       Class Phaeophyceae Hansgirg (1886) - brown algae
         Order Chordariales
           Family Leathesiaceae
             1 Genus Corynophlaea F.T. Kützing (1843)
             2 Genus Cylindrocarpus H.M. Crouan & P.L. Crouan (1851)
             3 Genus Leathesia Gray (1821)
             4 Genus Microcoryne H.F.G. Strömfelt (1888)
             5 Genus Myriactula Kuntze (1898)
             6 Genus Petrospongium C. Nägeli ex F.T. Kützing (1858)