Uncommon Descent reports on a new paper in the most prestigious peer-reviewed science journal.
Excerpt:
A new paper has just been published in Nature by Gregory J. Retallack of the University of Oregon. The paper argues that the Ediacaran fauna are not ancestral to the animals which arose in the Cambrian explosion and that life existed on land 65 million years before previously thought. Retallack further argues that the iconic fossils of Dickinsonia and Springgina, which appear in the Precambrian Ediacaran assemblages, were not in fact animals at all. Rather they were, according to Retallack, lichens, soil structures and traces of slime moulds.
And they link to this post about the paper from Science Daily, which makes the significance of the discovery even clearer:
Ancient multicellular fossils long thought to be ancestors of early marine life are remnants of land-dwelling lichen or other microbial colonies, says University of Oregon scientist Gregory J. Retallack, who has been studying fossil soils of South Australia.
[…]”This discovery has implications for the tree of life, because it removes Ediacaran fossils from the ancestry of animals,” said Retallack, professor of geological sciences and co-director of paleontological collections at the UO’s Museum of Natural and Cultural History. His evidence, mostly gathered from a site in the Flinders Ranges, is presented in a paper placed online ahead of print by the journal Nature.
“These fossils have been a first-class scientific mystery,” he said. “They are the oldest large multicellular fossils. They lived immediately before the Cambrian evolutionary explosion that gave rise to familiar modern groups of animals.”
Retallack studied numerous Ediacaran fossils and determined that the diversity reflects a preference by the ancient organisms for “unfrozen, low salinity soils, rich in nutrients, like most terrestrial organisms.” Thus the fossils in Australia’s iconic red-rock ranges, he concludes, were landlubbers. In his closing paragraph, Retallack outlines implications for a variety of other Edicaran fossils, that could have been lichens, other microbial consortia, fungal fruiting bodies, slime molds, flanged pedestals of biological soil crusts, and even casts of needle ice.
Ediacaran fossils, he said, represent “an independent evolutionary radiation of life on land that preceded by at least 20 million years the Cambrian evolutionary explosion of animals in the sea.” Increased chemical weathering by large organisms on land may have been needed to fuel the demand of nutrient elements by Cambrian animals. Independent discoveries of Cambrian fossils comparable with Ediacaran ones is evidence, he said, that even in the Cambrian, more than 500 million years ago, life on land may have been larger and more complex than life in the sea.
Here’s a quick re-cap of the Cambrian explosion:
Part 1: (7:50)
Part 2: (3:25)
This explosion in biological complexity fits nicely with an intelligent designer . Intelligent agents make information by sequencing symbols into functional instructions. That’s what new body plans are. It’s like new software, and new software requires a software engineer.
The standard naturalist response to this problem of sudden origins of anaimal body plans used to be that the Cambrian explosion did have precursors. The precursors were thought to be the Ediacaran fossils. But that’s all been shot to Hell now, with this new paper in Nature. Ooops!
Doug Axe has a new post up about a new paper that challenges the Darwinian narrative. (H/T J Warner Wallace)
Full text:
The textbooks say that evolution happens most rapidly in response to environmental changes. You would think, then, that the cycling from glacial periods to warmer interglacial periods would be accompanied by significant changes in the species that survive the change.
Not so, according to a new paper by Donald Prothero and colleagues. After examining all the comon bird and mammal species preserved in the Rancho La Brea tar pits in California, the authors conclude:
the data show that birds and mammals at Rancho La Brea show complete stasis and were unresponsive to the major climate change that occurred at 20 ka, consistent with other studies of Pleistocene animals and plants. Most explanations for such stasis (stabilizing selection, canalization) fail in this setting where climate is changing. One possible explanation is that most large birds and mammals are very broadly adapted and relatively insensitive to changes in their environments, although even the small mammals of the Pleistocene show stasis during climate change, too.
I work at the other end of the size spectrum, on protein molecules rather than whole animals. It’s interesting that attempts to catch evolution in the act of doing the amazing things that the textbooks attribute to it seem to fail at both ends of the spectrum.
Over at PhysOrg.com, there’s a study being reported highlighting a 520 million year old fossil arthropod with a highly-developed brain. So soon in evolutionary time, and an already developed brain??? (To go beside the very complex eye of the Trilobites)
Here’s what one scientist said:
“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 department of neuroscience.
Sorry, Darwinists, but IDers would expect it.
Let’s keep track of the problems that this good scientific discovery creates for naturalists.
Problem #1: Darwinism does not support rapid change from single-celled organisms just before the Cambrian explosion to complex brains just after the Cambrian explosion. Darwinian evolution has to go gradually from simple to complex.
Now for some more:
And, to add insult to injury for our Darwinist brethren, here’s this confirmation of “genetic entropy” and Behe’s QRB “rule”:
“The shape [of the fossilized brain] matches that of a comparable sized modern malacostracan,” the authors write in Nature. They argue the fossil supports the hypothesis that branchiopod brains evolved from a previously complex to a more simple architecture instead of the other way around.
So, that’s another problem.
Problem #2: Darwinism does not support going from more complex to less complex organisms, in general. This is especially true for complex biological systems like brains. Darwnists must explain how complex brains can be built from simpler parts through a long sequence of likely mutations.
And more:
Here’s how the article ends:
The fossil supports the idea that once a basic brain design had evolved, it changed little over time[Translation: ID is completely correct!!!], he explained. Instead, peripheral components such as the eyes, the antennae and other appendages, sensory organs, etc., underwent great diversification and specialized in different tasks but all plugged into the same basic circuitry. “It is remarkable how constant the ground pattern of the nervous system has remained for probably more than 550 million years,” Strausfeld added. “The basic organization of the computational circuitry that deals, say, with smelling, appears to be the same as the one that deals with vision, or mechanical sensation.”
Yet another problem.
Problem #3: Darwinism does not work if organisms are observed to remain changeless and static over time. Darwinism requires change over time from simple to complex. Backwards change or no change falsifies Darwinism.
It’s just another prediction of Darwinian orthodoxy falsified by experimental evidence published in the top scientific peer-reviewed journal. Will this cause Darwinians to revise their theory to fit the evidence? Not likely. Their motivations for clinging to naturalism, the religion that undergirds Darwinism, are entirely beyond correction by evidence.
I wonder what people like P.Z. Myers and Larry Moran do when their religion comes into conflict with scientific evidence? Do they bitterly cling to their mythology from the 19th century? Or do they adjust their worldview to be in line with the progress of science?
Let Richard Dawkins explain evolution and the role of evidence:
“My argument will be that Darwinism is the only known theory that is in principle capable of explaining certain aspects of life. If I am right it means that, even if there were no actual evidence in favour of the Darwinian theory (there is, of course) we should still be justified in preferring it over all rival theories.” — p. 287, Blind Watchmaker” (1986)
Or Richard Lewontin:
“Our willingness to accept [naturalistic] scientific claims that are against common sense is the key to an understanding of the real struggle between science and the supernatural. We take the side of science in spite of the patent absurdity of some of its constructs, in spite of its failure to fulfill many of its extravagant promises of health and life, in spite of the tolerance of the scientific community for unsubstantiated just-so stories, because we have a prior commitment, a commitment to materialism. It is not that the methods and institutions of science somehow compel us to accept a material explanation of the phenomenal world but, on the contrary, that we are forced by our own a priori adherence to material causes to create an apparatus of investigation and a set of concepts that produce material explanations, not matter how counterintuitive, no matter how mystifying to the uninitiated. Moreover, that materialism is absolute, for we cannot allow a divine foot in the door.” (Richard Lewontin in New York Review of Books, January 9, 1997, p. 28)
Naturalists don’t want to have to explain why they are always believing things that are falsified by the progress of science. Naturalists fought the Big Bang tooth and nail, trying to save their eternal universe from the progress of science. Naturalists invented the now discredited oscillating model of the universe in order to “explain” the evidence for a cosmic beginning. Naturalists invented the unobservable, untestable multiverse to “explain” the cosmic fine-tuning. Unobservable aliens were posited in order to “explain” the origin of life so soon after the cooling of the Earth. Precursor fossils are invented without evidence in order to “explain” the Cambrian era explosion in biological complexity. And so on.
Evidence doesn’t matter to people who are motivated by naturalistic faith. Like belief in a flat-Earth, the delusion of naturalism is not accountable to scientific evidence. They believe what they want to believe. It’s not up for debate. For some people like Richard Dawkins, a prior lifestyle commitment makes theism (and the moral law!) an impossibility a priori. But rational people know that believing something just so that your actions are “justified” doesn’t make what you believe true.
Speaking of Richard Dawkins, if you haven’t seen the video of that coward being “Eastwooded” by William Lane Craig, here’s the link. Dr. Craig has obviously seen a lot of Clint Eastwood movies, and he manages to work in about a half-dozen Clint Eastwood lines into a careful philosophical and scientific refutation of Dawkins’ faith-based atheist delusions. I don’t mind if Dawkins wants to have his religious beliefs for comfort in the privacy of his home or church, but I don’t think that we should be making policy off of his subjective preferences. In the public square we need to be guided by public evidence – like the evidence from science.
WINTERY KNIGHT 