The ancestors of octopuses and squid once sported hard shells, but when did they lose their “mobile homes” and become agile, soft-bodied swimmers? A new study finds that this change may have occurred during the Jurassic and Cretaceous periods.
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from Innovation and Digital Marketing http://www.livescience.com/58063-why-the-octopus-lost-its-shell.html?utm_source=rss&utm_medium=rss
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