Journal Article 3 angiosperm diversification Comment 2 Early Cretaceous 1 Research Support, Non-U.S. Gov't 1 Research Support, U.S. Gov't, Non-P.H.S. 1 adaptive accuracy 1 mehr ... crown age of angiosperms 1 evolution 1 floral evolution 1 floral orientation 1 floral specialization 1 floral symmetry 1 fossil record 1 leaf vein density 1 molecular clock 1 mycorrhiza 1 physical mechanics of pollination 1 plant evolution 1 pollination precision 1 root evolution 1 root traits 1 weniger ...