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Definition of Order cordaitales
1. Noun. Extinct plants having tall arborescent trunks comparable to or more advanced than cycads; known from the Pennsylvanian period; probably extinct since the Mesozoic era.
Exact synonyms: Cordaitales
Generic synonyms: Plant Order
Group relationships: Class Coniferopsida, Coniferophyta, Coniferophytina, Coniferopsida, Subdivision Coniferophytina
Member holonyms: Cordaitaceae, Family Cordaitaceae
Generic synonyms: Plant Order
Group relationships: Class Coniferopsida, Coniferophyta, Coniferophytina, Coniferopsida, Subdivision Coniferophytina
Member holonyms: Cordaitaceae, Family Cordaitaceae