Tyrannosaurus Rex Tyrannosaurus rex arose during the Cretaceous period about 85 million years ago, and thrived as a top land ...

Today, about 90% of plants are flowering plants, also known as angiosperms. While the origin of flowering plants may go back as far as the Triassic Period, we don't see much evidence of them in the ...

From them he deduces that hadrosaurs, or duck-billed dinosaurs, subsisted on large angiosperm leaves that had evolved in a warm climatic shift just before the Cretaceous period ended. Referring to ...

Various insect groups also appeared, including bees, which helped increase the spread of flowering plants. And mammals now included tree climbers, ground dwellers and even predators of small dinosaurs ...

or flowering plants, came to dominate them. JarnoVerdonk Modern tropical rainforests are dense, with thick canopies - unlike those of the late Cretaceous Period The structure of tropical forests ...