SNOWMASS VILLAGE.- Denver Museum of Nature & Science excavation crews discovered two additional Ice Age mammal species at a fossil dig site at Ziegler Reservoir near Snowmass Village, Colorado on Thursday. The first find was a humerus, or upper arm bone, of a giant ground sloth. The second discovery was a small deer-like animal. The total number of mammal species found at the dig site now totals five: Columbian mammoth, American mastodon, Ice Age bison, giant ground sloth, and the yet to be identified deer-like animal. When combined with the well-preserved plant matter, insects, and invertebrates found at the site, the excavation is revealing an exceptionally-well preserved Ice Age ecosystem. “It is truly uncommon to get all parts of a fossil ecosystem preserved in one place,” said Dr. Ian Miller, the Museum’s curator of paleontology and chair of the Earth Science Department. “Instead of having just a piece of the ecosystem to