nomenclatorial act:
subsequent publication
Page:
113
diagnosis:
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.
systematic position:
Pinopsida, Cordaitanthales
Classification:
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