Tough jellies found according to Science Shots 10 July 2015, Live Science and Science Advances doi: 10.1126/sciadv.1500092. Comb jellies are small soft bodied sea creatures with a sac-like body that propel themselves around using eight rows of whip-like hairs called cilia. Scientists in China and USA have studied fossilised specimens of comb jellies in Cambrian rocks in southern China dated as 520 million years old. They identified six different species, three previously unknown, and three known but not closely studied.
The fossils have a similar body structure to living comb jellies but also had skeletons consisting of eight struts and eight rigid plates that surrounded a buoyancy-sensing organ called a statolith. It is not clear whether the struts and plates were made of a mineralised substance (e.g. calcite) or of chitin, the hard substance that forms the cuticles of crustaceans and insects.
The researchers suggest that jellies developed the skeletons as part of an evolutionary arms race. The Science Shots article concludes with: “They lived in a shallow, subtropical ocean at a time when predators and their prey were locked in an evolutionary arms race. Sadly, the armor didn’t save these ancient comb jellies: They were part of a lineage that apparently died out long ago”.
Editorial Comment: The concept of an evolutionary arms race does not make sense in the real world. In any predator-prey relationship, the prey will only survive if they already have features to resist being eaten. Not being eaten will not cause creatures to evolve any features they did not already have, since simply surviving does not produce any new genes needed to make new features. Those that avoid getting eaten, for whatever reason, will only pass on the genes for whatever structures and functions they already had, so the next generation will be unchanged, i.e. not evolved. If we look at the actual evidence from fossil and living comb jellies, we do not find any evidence for evolution. We simply find that once there were more kinds of comb jellies, with more features than we see in living comb jellies. This is the opposite of evolution. The evidence from comb jellies fits with the Biblical history of the world, where God created a good world abounding in many kinds of fully functional creatures, but this world has been devastated by many ecological disasters and many creatures have died out, or degenerated and/or become less complex. (Ref. ctenophores, degeneration, extinction)
Evidence News vol. 15, No. 16
16 September 2015
Creation Research Australia