The researchers say more study is needed to substantiate the idea of that evolution could occur relatively quickly, and that whole parts of a plant or animal's body could change at once.
Source: http://www.cnn.com/
And, like the pterodactyl discussed in this article, this sentence has characteristics of an earlier version ("the idea of evolution occurring") and the intended later version ("the idea that evolution could occur"). Only time will tell whether it will fully develop.
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