- Pterido****tophyta. It is the only
family in the
monotypic order Calamopityales. This
family is
characterized by its
petioles and
specific wood pattern...
-
regarding the
relationships of "seed ferns" to
living plant groups.
Order †
Calamopityales Němejc (1963)
Order †Corysto****les
Petriella (1981) [= Umkomasiales...
- †Pteridosperms* (seed ferns) and
other extinct seed
plant groups †Bennettitales †
Calamopityales †Callistophytales †Caytoniales †Cordaitales †Corysto****les †Czekanowskiales...
- †Pteridosperms* (seed ferns) and
other extinct seed
plant groups †Bennettitales †
Calamopityales †Callistophytales †Caytoniales †Cordaitales †Corysto****les †Czekanowskiales...
- some of
which qualify as "seed ferns":[citation needed] †Cordaitales †
Calamopityales †Callistophytales †Caytoniales †Gigantopteridales †Glossopteridales...
- †Pteridosperms* (seed ferns) and
other extinct seed
plant groups †Bennettitales †
Calamopityales †Callistophytales †Caytoniales †Cordaitales †Corysto****les †Czekanowskiales...
- †Pteridosperms* (seed ferns) and
other extinct seed
plant groups †Bennettitales †
Calamopityales †Callistophytales †Caytoniales †Cordaitales †Corysto****les †Czekanowskiales...
- Taxus, Cephalotaxus, Amentotaxus,
Torreya Order Cordaitales Order Calamopityales Order Callistophytales Order Caytoniales Order Gigantopteridales Order...
- †Pelta****les? †Umkomasiales? (corystosperms) †Caytoniales? †Dicranophyllales? †
Calamopityales? †Callistophytales? †Glossopteridales? †"Palaeophyllales"?...
- †Pteridosperms* (seed ferns) and
other extinct seed
plant groups †Bennettitales †
Calamopityales †Callistophytales †Caytoniales †Cordaitales †Corysto****les †Czekanowskiales...
