The great angiosperm radiation, when a great diversity of angiosperms appears in the fossil record, occurred in the mid-Cretaceous (approximately 100 million years ago).
The root of angiosperm phylogeny inferred from duplicate phytochrome genes. Science 286: 947-949. Mathews, S., and M. J. Donoghue. 2000. Basal angiosperm phylogeny inferred from ...
Britannica online encyclopedia article on angiosperm (plant), any member of the more than 300,000 species of flowering plants (division Anthophyta), the largest and most diverse ...
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