The evolution of rocky eyes

April 20, 2011 § 1 Comment

Ed Yong at Not Exactly Rocket Science has a fascinating recent post on the eyes of chitons, which are made of limestone (yes, really! No, they don’t work terribly well) and evolved within the last 10 million years.  Some species of chitons don’t have eyes, so it may be possible to gain insight into why they evolved by comparing the eyed and eyeless species.

§ One Response to The evolution of rocky eyes

  • confusedious says:

    Amazing how evolution has produced such structures at different points of time on different branches of the tree of life, all with roughly the same function. A very convincing case of convergence or all they all built on an ancestral trait? I don’t know enough to answer that question, but it would be interesting to find out.

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