Because the Morian Hall of Paleontology is too large to tour in one evening, we are bringing back this popular series that covers the hall section by section with James Washington–now expanded to 6 sessions. All sessions are Wednesday evenings at 6:30 p.m. When the great dinosaurs died out 65 million years ago, our own class, Mammalia, took over. Meet the grand animals that dominated the lands at this time–sabretooths, mastodon, giant sloth, giraffe and more. As world climate turned drier and cooler, mammals responded with grass-chewing molars and hoofs designed for galloping over hard savannah soil. Purchase entire 6-session package by July 5 to receive discount pricing.