The Ediacaran creatures are fascinating predecessors to be sure. They will likely turn out to be explosions of life, just like the Cambrian, but often not clearly related to it.
Researcher: “Evidence is converging towards picturing the Cambrian explosion as even swifter than what we thought,” says Aria. “Finding a fossil site like the Burgess Shale at the very beginning of the Cambrian would be like looking into the eye of the cyclone.”
The claim that the worm challenges the Cambrian explosion which followed this Ediacaran period is weird because we knew there were worms in the Ediacaran on account of the tracks (and comb jellies too) but the explosion of multi-faceted life in the Cambrian is a unique event in any case.
For some years, it has not been the practice of many Catholics to question Darwinism. Most got sucked years ago into some muddle according to which the great theologian Thomas Aquinas didn’t supposedly think there could be such a thing as observable design in nature because that would make God a “tinkerer.” Some tinker. Anyway, […]
The Cambrian Explosion, demonstrated time and again to be an ‘explosion,’ is a problem for Darwinian theory. Darwin postulated gradualsim; in fact, he insisted upon it when pressed by supporters to modulate this position of his. The problem is that multiple life forms are required to “build” new life forms. You need lots of species […]
Dear readers, It has been far too long since my last post, occasioned by the fact that I have entirely too many irons in the fire. I hope you will forgive this brief “drive-by” post, with a request for some help and information. One of the common refrains that comes up regarding the fossil record, […]
“It is remarkable to think that our oldest animal ancestors — and therefore all of us — may owe our existence, in part, to an unusual episode of plate tectonics over half a billion years ago” Is this a philosophical statement of some kind?
Just before the Cambrian explosion. Generally speaking, radiation is much more likely to produce damaging mutations than helpful ones. It would be interesting to know if some Ediacaran species disappeared at this point.
Associate Professor Jochen Brocks commented, “These fossils comprise our best window into earliest animal evolution and are the key to understanding our own deep origins.” Yes, in the sense that sudden emergence rather than a long, slow Darwinian process seems more likely all the time.
These animal groups lived in the ocean over half a billion years ago but were buried by a subterranean mudflow: Paleontologists found thousands of fossils in rocks on the bank of the Danshui river in Hubei province in southern China, where primitive forms of jellyfish, sponges, algae, anemones, worms and arthropods with thin whip-like feelers […]
Problem the find creates: “It has always been assumed that the creatures in the Burgess Shale — known for the richness of its fossils — had been preserved so immaculately because the lack of oxygen at the bottom of the sea stopped decay, and because no animals lived in the mud to eat the carcasses.”
The explosion lasted only about 20 million years, their research shows, and the subsequent 520 million years featured more even rates of change: At (or shortly before) the start of the Cambrian Period (541 million years ago), modern animals evolved. They rapidly diversified into all the major groups (phyla) of animals we see today, such […]
Even if these researchers are a teensy bit optimistic about their pinpoint accuracy, the pattern is clear: The history of life is becoming a field markedly less favorable to hand-waving. And note, in 410,000 years, the transition from the multicellular but simple Ediacaran life forms to the diverse Cambrian life forms is supposed to have taken place purely by natural selection acting on random mutation (Darwinism). Aw, come on.
Okay, okay, not bringing them to “life” but giving us a much better sense of life over half a billion years ago. The Canadian Rockies have, it turns out, many more Cambrian sites than the big 1909 find that lay neglected at the Smithsonian so long: Each new stop has offered striking views of unfamiliar animals, many […]
Explanations of the dramatic Cambrian explosion of life forms (540 million years ago) are a cottage industry, with arguments about oxygen a staple of the discussion. See, for example, Maverick theory: Cambrian animals remade the environment by generating oxygen Did a low oxygen level delay complex life on Earth? There was only a small oxygen […]