- Cordaitales, order Cordaitales - extinct plants having tall arborescent trunks comparable to or more advanced than cycads; known from the Pennsylvanian; probably extinct since the Mesozoic
--1 is a kind of plant order
--1 is a member of
--1 has members: Cordaitaceae, family CordaitaceaeConiferopsida, class Coniferopsida, Coniferophytina, subdivision Coniferophytina, Coniferophyta