Palaeontologists have uncovered half-a-billion-year-old fossils demonstrating that primitive animals had excellent vision. […]

Their discovery reveals that some of the earliest animals possessed very powerful vision; similar eyes are found in many living insects, such as robber flies. Sharp vision must therefore have evolved very rapidly, soon after the first predators appeared during the ‘Cambrian Explosion’ of life that began around 540 million years ago.

http://www.sciencedaily.com/releases/2011/06/110629132546.htm

Meanwhile in Dawkinsland: ”Eyes don’t fossilize [jo, tydligen], so we don’t know how long our type of eye took to evolve its present complexity and perfection from nothing, but the time available is several hundred million years.”

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