[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Kingdom Procaryotae Murray 1968 (Approved Lists 1980) see Domain Bacteria Woese et al. 1990
     Genus †Primaevifilum Schopf 1983
       1 †Primaevifilum septatumᵀ Schopf 1983
       2 †Primaevifilum delicatulum Schopf 1992
       3 †Primaevifilum amoenum Schopf 1992
       4 †Primaevifilum conicoterminatum Schopf 1992