Plants that survived dinosaur extinction pulled nitrogen from air, study concludes - Phys.org
phys.orgSubmitted by physorg8953 in science
Once a favored food of grazing dinosaurs, an ancient lineage of plants called cycads helped sustain these and other prehistoric animals during the Mesozoic Era, starting 252 million years ago, by being plentiful in the forest understory. Today, just a few spe…