Dinosaurrific! New Dinosaur Supertree
Wednesday, July 23, 2008 - 12:42
in Paleontology & Archaeology
(PhysOrg.com) -- It has long been debated whether dinosaurs were part of the ‘Terrestrial Revolution` that occurred some 100 million years ago during the Cretaceous when birds, mammals, flowering plants, insects and reptiles all underwent a rapid expansion.