The evolution of the eye: 40 times

Russell T. Arndts (rta@TIGGER.STCLOUD.MSUS.EDU)
Mon, 27 Jan 1997 09:49:40 -0600

I am teaching a new course and new a reference.

Many times I have read that the eye evolved 40 times. Can some please give
me a reference fkor this statement. I seem to remember that there was an
article in Science with this information.

Thanks in advance.

Russell Arndts