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recent bookmarks from andrewduckerWhy Do Turtles Have Shells?2016-07-15T08:20:03+00:00
http://www.theatlantic.com/science/archive/2016/07/the-turtle-shell-first-evolved-for-digging-not-defence/491087/
andrewduckerturtle evolution archaeologyhttps://pinboard.in/u:andrewducker/b:f3a45276b30a/