Tuesday 23 February 2016

The Cambrian Explosion Is Still a Big Mystery for Evolutionists


Cambrian animals were anything but simple. An Anomalocaris model at Dinosaur Museum, Canberra, Australia. Image courtesy of Photnart, Creative Commons (CC0 1.0).





Joel Kontinen

Charles Darwin saw the Cambrian Explosion as a big dilemma. At least one evolutionary biologist acknowledged that it still presents a real headache for evolutionists.

Evolutionists have tried one explanation after another, with dismal results.

The Cambrian Explosion, with its exquisite animals such as trilobites and tardigrades (that are still with us), is not easily explained away by Darwinian mechanisms.

A ”520 million year” old fossilised brain makes the Darwinian story highly improbable and impossible.

Nevertheless, recently the journal Nature attempted to provide a solution to the confounding dilemma:

An evolutionary burst 540 million years ago filled the seas with an astonishing diversity of animals. The trigger behind that revolution is finally coming into focus.”

This time, the assumed “big trigger” is oxygen.

Nature quotes palaeontologist Erik Sperling (Stanford University, California) as saying:

If oxygen levels were 3% and they rose past that 10% threshold, that would have had a huge influence on early animal evolution. There's just so much in animal ecology, lifestyle and body size that seems to change so dramatically through those levels.”

This will not solve anything, however. Any kind of life needs more than just water. And oxygen cannot give birth to complicated organisms.

What is needed is genetic information coded in a way that enables it to build functional multicellular animals. That is – and will forever be – beyond the power of Darwinian mechanisms.

Source:

Fox, Douglas. 2016.What sparked the Cambrian explosion? Nature 530, 268–270 (18 February 2016) doi:10.1038/530268a.