eukaryotes see Domain Eukaryota Chatton, 1925 "opisthokonts" see Clade Opisthokonta Cavalier-Smith 1987 [Simpson & Medina 2020] 1.1 chytrids see Class Chytridiomycetes Moebius (1929) 1.2 true fungi 2.1 choanoflagellates see Class Choanoflagellata 2.2 Metazoa Haeckel 1874 - multicellular animals see Kingdom Animalia Linnaeus, 1758