Major problem for evolutionists, this

Discovery of fossil with complex brain dated just after the Cambrian explosion

Not doing a lot of posting here on this, just read the post at the link. But the short course is that Nature magazine, one of the most respected scientific journals in the world, has published a paper describing the discovery of fossils of a 520-million year old fossilized arthropod with amazingly well-developed, complex brains.

Since the specimen dates from the time of the Cambrian explosion, this discovery (despite being trumpeted as a "missing link") is a major, major problem for purely-materialist evolutionists because Darwinism and its successors simply cannot account for the appearance of such biological complexity so quickly. As PhysOrg's report on the discovery puts it:

"No one expected such an advanced brain would have evolved so early in the history of multicellular animals," said Strausfeld, a Regents Professor in the UA [University of Arizona] department of neuroscience.

Well, the Cambrian explosion is itself still a biological mystery. Good luck with this one.