Entsovia
morphogenus
type species: E. rarisulcata Meyen, 1969
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morphogenus
type species: E. rarisulcata Meyen, 1969
genus
Dicranophyllalean plants with ovulate sporophylls attached singly to the leaf axil; ovules borne subapically on pinnate arms of sporophylls. foliage: Leaves fork twice or three times. Stem: With no leaf cushions.
Cordaitanthalean plants with ovulate strobili attached to axis between leafy bracts, and grouped loosely into spirally arranged compound polysperms; ovules reflexed on the seed-scale.
Male: Male strobili differ from female strobili, the pollen organs being borne on the margin of a palmately lobed structure, but it is unknown if they were parts of compount structures; pollen quasi-monosaccate. Foliage: Leaves hypostomatic; stomata not in regular files. Stem: Trees or shrubs, with eustelic stems often with separate pith.
Cordaitanthalean plants with simple strobili into compount polysperms; ovules borne erect, with integument partly free from nucellus. Male: Male strobili similar to female strobili; pollen quasi-monosaccate. Foliage: Leaves hypostomatic; stomata in distinct furrows between veins. Stem: Trees or shrubs, with eustelic stems.
Dicranophyllalean plants with ovulate sporophylls arranged in cones (strobili), and with ovules borne apically on pinnate arms.
Foliage: Leaves fork once or twice; cuticle hypostomatic, with stomata in two furrows near the leaf margin.
Stem: With prominent leaf cushions.
Pinopsid plants with ovulate strobili borne axiallary to a bract of leaf; ovules platyspermic, borne on pinnate sporophylls.
Male: Pollen organs formed into loose cones; pollen monosaccate.
Foliage: Leaves elongate-linear, helically disposed, with a single longitundinal vein.
Dicranophyllales with polysperms borne on leaves
Woody, branched plants; shoots bearing elongate-linear leaves, helically disposed, dichotomously divided and univeined. Female organs lax, compound, with sessile or pedunculate ovules placed on leaves or axillary to leaves.