Inglorious beginnings: Experts trace humanity's origins to ancient worm

Canada.com Monday 5th March, 2012

CALGARY -- It seems an inglorious beginning, but some scientists are now convinced humanity's origins can be traced to an ancient, flat, fishlike worm.A team of researchers subjected the 505-million-year-old Burgess shale fossils of Pikaia gracilens to the latest technology and found evidence that could settle a decades-long debate about the primit...

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