Domain Eucaryota Subdomain Chlorota Doweld (2001) Kingdom Chlorobiota C.Jeffrey ex Doweld (2001) - plants see Subkingdom Viridiplantae Caval.-Sm. (1981) Subkingdom Pteridobiotina Britton & A. Br. (1896) Superphylum Cycadophytanae Doweld (2001) Phylum †Moresnetiophyta Doweld (2001) see Division Pteridospermatophyta Meyen Class †Moresnetiopsida Doweld (2001) Order †Pullarithecales Doweld (1998) Family †Austrocalycaceae Doweld (2001), orth. inval. see Family Austrocalyxaceae J.C. Vega & S.Archang. (2001)