a genus of tall Paleozoic woods superficially resembling contemporary screw pines; they were structurally intermediate in certain techniques between cycads and conifers.
A genus of fossil plants, extensively distributed, really characteristic of the Carboniferous epoch, and particularly of this coal-measures of this age.
high Paleozoic trees superficially resembling modern screw pines; structurally advanced in certain means between cycads and conifers
a genus of tall Paleozoic woods superficially resembling modern-day screw pines; they were structurally intermediate in a few ways between cycads and conifers.
A genus of fossil plants, extensively distributed, very characteristic for the Carboniferous epoch, and especially of this coal-measures of the age.
tall Paleozoic trees superficially resembling contemporary screw pines; structurally intermediate in some ways between cycads and conifers
How would you define cordaites?