The angiosperms are the most recently derived plant group, originating some 160 million years ago and becoming widespread around 120 million years ago. Angiosperm means “enclosed seed,” referring to ...
Wing, Scott L. 1987. "Interactions of Angiosperms and Herbivorous Tetrapods through Time." In The Origins of Angiosperms and their Biological Consequences. Friis, E ...
While the extinction affected some flower species, most lineages survived and the catastrophe may have helped them become a dominant form of plant life. By Jack Tamisiea When a mountain-size slab of ...
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