Calvin College Mastodon Resource - Mastodon resource containing a growing number of journal articles and links. Also features photographic inventory and journal of Calvin College's current mastodon excavation in Grand Rapids, MI. The UnMuseum - Mammoth and mastodon exhibit. Woolly Mammoths: Evidence of Catastrophe? - Two articles questioning accepted views on whether preserved mammoth remains indicate the occurrence of a great catastrophe and whether mammoths were well adapted for living in cold climates. Mammoths - Provides information on these extinct members of the Proboscidea, three species of which lived on the mainland of the United States at the end of the last Ice Age. Mastodons - The American mastodon, Mammut Americanum, became extinct about 11,000 years ago. This illustrated article shows exhibits at the Illinois State Museum. Amebelodon - The Shovel-tusker: Account of a new discovery. Mastodon State Historic Site - Provides information on the mastodon fossils found in Missouri in what is now known as the Kimmswick Bone Bed, one of the most extensive Pleistocene deposits in the USA.