One current theory for the origin of the Evolutionary Big Bang is that the emergence of the eye in animals such as the trilobite triggered the Cambrian Explosion. Once one predatory species develops eyes, there is a powerful selection mechanism in favour of others developing and refining eyes too

One current theory for the origin of the Evolutionary Big Bang is that the emergence of the eye in animals such as the trilobite triggered the
Cambrian Explosion. Once one predatory species develops eyes, there is a powerful selection mechanism in favour of others developing and
refining eyes too