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Oldest species of a marine mollusc discovered
Date:2/22/2011

event was characterised by a "lack of oxygen on the seabed, which led to the mass burial of organic carbon and climate cooling".

"The thicker calcite layer of the shell of this new species compared with that of its predecessor (of the Horiopleura genus), could have helped it adapt better to life in colder waters, which were more acidic due to the increased solubility of atmospheric CO2", the geologist explains.

The researcher adds: "The response of these rudists to ocean acidification could apply to the future evolution of today's marine ecosystems, above all among those kinds of organisms that form their shells or skeletons from calcium carbonate".


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Oldest species of a marine mollusc discovered
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