For a detailed bibliography of each Research Note consult the Research Library. Research Note # 1     Jefferson's Ground Sloth Research Note # 2     Woolly Mammoth Research Note # 3     American Mastodon Research Note # 4     North American Short-Faced Bear Research Note # 5     American Lion Research Note # 6     Giant Beaver Research Note # 7     American Scimitar Cat Research Note # 8     Steppe Bison Research Note # 9     Beringia Research Note # 10   Ice Age Yukon and Alaskan Camels Research Note # 11 North American Saiga Research Note # 12 Ancient Caribou Research Note # 13 Helmeted Muskox Research Note # 14 Yukon Horse