Modern mussel shells much thinner than 50 years ago

Modern mussel shells much thinner than 50 years ago Chicago IL (SPX) Jun 17, 2016 - Shells of California mussels collected from the Pacific Ocean off the coast of Washington in the 1970s are on average 32 percent thicker than modern specimens, according to a new study published by University of Chicago biologists. Shells collected by Native Americans 1,000 to 1,300 years ago were also 27 percent thicker than modern shells, on average. The decreasing thickness over time, i ... more

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