Biol J Linn Soc 74:459–474. Smith AB, KJ Peterson 2002 Dating the time of origin of major clades: molecular clocks and the fossil record. Annu Rev Earth Planet Sci 30:65–88. Smith AC 1973 Angiosperm ...
He makes a plea for more intensive study of Angiosperm-like fossils from rocks of the Triassic, Jurassic and Lower Cretaceous periods, in the confident hope that some will be found to be the early ...
However, the mechanisms by which flowers maintain water balance are poorly understood across angiosperm branches. In a study ...