1. tall Paleozoic trees superficially resembling modern screw pines; structurally intermediate in some ways between cycads and conifers; [syn: Cordaites, genus Cordaites]
WordNet (r) 3.0 (2006):
genus Cordaites
n 1: tall Paleozoic trees superficially resembling modern screw
pines; structurally intermediate in some ways between
cycads and conifers [syn: Cordaites, genus Cordaites]