This is a case of evolutionary biology trying to explain away the data that otherwise was not directly expected under their model.
So, is every thing OK with Darwinism after all? No so fast. Actually, there are some problems that do not square well with a Darwinian scenario.
Megalodon was a specialized apex predator and fed mainly on large baleen whales.
While octopus brains are very different from vertebrate brains, they share with vertebrates, a huge number of microRNAs.
I do not know Dr. Merilä’s stance on human origins, but it is a safe bet that he denies intelligent design, and believes humans evolved from other animals.