During what geological period do the angiosperms become more common?

AngiOSperms, or flowering plants, became more common during the Cretaceous period, which lasted from approximately 145 to 66 million years ago. This period saw a significant diversification and proliferation of angiOSperms, leading to their dominance in many terrestrial ecosystems. Their emergence is considered a crucial evolutionary development, influencing the structure and function of modern ecosystems.