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.