"...the exceptional preservation displayed in these rocks enables us to recognise the eyes, scales and even the liver of the animals. The impressions in the shale are faint, but they are also clear and diagnostic."
"The fossil record confirms that the evolution of fish was a step-wise event," explained Professor Aldridge. "The various characters that make up a fish, or a vertebrate, didn't all appear at once - they were added one-by-one through evolutionary time.
Kind of like the reptile-mammal and reptile-bird transitions.
Then there is this older (from 1999) discovery concerning Cambrian evolution. Interesting stuff!
