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 • Syn: order Cordaitales • Hypernyms: plant order • Member Holonyms: Coniferopsida, class Coniferopsida, Coniferophytina, subdivision Coniferophytina, Coniferophyta • Member Meronyms: Cordaitaceae, family Cordaitaceae
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