In a message dated 4/20/00 4:11:19 AM Eastern Daylight Time, cliff@cab.com
writes:
<< Huxter4441@aol.com wrote:
><< It may not be working well in evolutionary theory, which seems at a
> dead end in regard to the origin of metazoan complexity, the Cambrian
> explosion, and of course the original abiogenesis. >>
>
>Considering that the CE lasted for what was it? At least 13 million years?
>I'm not sure...
In a thread a few months back there were some references to recent
articles cutting the explosive part of the Cambrian down to half a million
years.
***** The 'explosive' part? Well, all I could find was this fairly recent
article:
Development 1999 Feb;126(5):851-9
Fossils, molecules and embryos: new perspectives on the Cambrian explosion.
Valentine JW, Jablonski D, Erwin DH
Department of Integrative Biology and Museum of Paleontology, University of
California, Berkeley, CA 94720, USA.
The Cambrian explosion is named for the
geologically sudden appearance of numerous metazoan body plans (many of
living phyla) between about 530 and 520 million years ago, only 1.7% of the
duration of the fossil record of animals. Earlier indications of metazoans
are found in the Neoproterozic; minute trails suggesting bilaterian activity
date from about 600 million years ago. Larger and more elaborate fossil
burrows appear near 543 million years ago, the beginning of the Cambrian
Period. Evidence of metazoan activity in both trace and body fossils then
increased during the 13 million years leading to the explosion....
Silly me - I was thinking of the pre-Cambrian period. Still, even if the
'most explosive' period was only 500,000 years, that is a long time. Not
long enough to 'satisfy' you, I see...
But the major point is that whether the organisms at this new level
of complexity appeared over 40 years or 40 million, there is no evidence
explaining their evolution; when they are observed, they are fully formed.
***** Must have been Intelligent Intervention, clearly.
These animals all share the same basic plumbing, wiring, and segmented
skeletal structure; this is what appeared suddenly, this is what is not
explained.
***** I'm curious about this plumbing, wiring, and skeletal structure. I
didn't know that there were digestive and neural structures that had been
fossilized, and I was unaware of the existence of skeletons so long ago
(unless you mean exoskeletons?). Maybe you can tell me more about it?
>And, of course, the original abiogenesis has nothing to do with evolution
>anyway....
Progressive creationists and ID advocates would agree. Evolutionists
would not. >>
If you say so....
This archive was generated by hypermail 2b29 : Thu Apr 20 2000 - 06:47:00 EDT