New research by Professor Beth Shapiro of the UC Santa Cruz Genomics Institute and University of Alberta Professor Duane Froese has identified North America's oldest Bison fossils and helped construct a bison genealogy establishing that a common maternal ancestor arrived between 130,000 and 195,000 years ago, during a previous ice age. This is a Yukon Wood Bison [Credit: Yukon Government]Shapiro, Froese and colleagues used new...

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