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|Noun||1.||family Cordaitaceae - chiefly Paleozoic plants; Cordaites is the chief and typical genus|
gymnosperm family - a family of gymnosperms
Cordaitales, order Cordaitales - extinct plants having tall arborescent trunks comparable to or more advanced than cycads; known from the Pennsylvanian period; probably extinct since the Mesozoic era
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