(CNN) -- Justin Blauwet noticed something unusual while working at a construction site in Iowa. At first glance, it appeared to be a block of stone, just under a foot long, covered in ridges. But ...
A worker in Sheldon, Iowa made a mammoth discovery while working on a construction site earlier this month — literally. DGR Engineering employee Justin Blauwet discovered an 11-pound woolly mammoth ...
SHELDON, Iowa — A prehistoric discovery was made at an Iowa construction site when a member of an engineering crew found a tooth that once belonged to a woolly mammoth. The person who found the tooth, ...
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