Domain Eucaryota Subdomain Chlorota Doweld (2001) Kingdom Chlorobiota C.Jeffrey ex Doweld (2001) - plants see Subkingdom Viridiplantae Caval.-Sm. (1981) Subkingdom Lycopodiobiotina Doweld (2001) Phylum Isoëtophyta Doweld (2001) Subphylum Isoëtophytina Doweld (2001) Class †Lepidocarpopsida Doweld (2001) Order †Leptophloeales Lemoigne (1982) see Order Protolepidodendrales Koidzumi (1939) Family †Lycopodiopsidaceae Chaloner (1967)