According to new research led by Dr. Nathan Jud of William Jewell College, angiosperm (also called broad-leaf, hardwood or deciduous) trees approaching 6.5 feet (2 m) in diameter were part of the forest canopies across southern North America by the Turonian stage of the Late Cretaceous epoch, approximately 92 million years ago — nearly 15 million years earlier than previously thought. An illustration of the finds made by Jud et al. Image credit:...
