I want to know the answer to the following question:
What species dominated many tree floras by the end of the Cretaceous period?
All the background I'm provided with is that "By the end of the Cretaceous, angiosperms dominated tree floras in many areas, although some evidence suggests that biomass was still dominated by cycad and ferns until after the Cretaceous–Paleogene extinction.". Is that enough to answer the question?