Posted by rpcman on September 16, 1999 at 16:55:07:
In Reply to: Macroevolution posted by Tom on September 16, 1999 at 16:18:42:
: The only evidences of macroevolution that I'm familiar with
: are based on speculative interpretations.
Speculative? Did you read and look at the evidence provided in the link? There is little to speculate about. A speculative theory is one that posits species being created out of thin air when such events have never been witnessed.
: Even where the fossil records
: seems to suggest such changes, (and these instances are rare), there is NO evidence
: that natural selection plus mutation is capable of producing them.
I see you don't bother to look very hard. If I offered you a dozen or so books on the subject, would you read them?
Virtually every ancient fossil ever found (and this is not a number that can be considered 'rare') is evidence of macroevolution. You'll be hard pressed to find fossils older than a few million years ago that closely resemble species still alive today.
: A lab-induced organism that has a complex
: organ that it previously lacked.
Wouldn't that be nice. Unfortunately, evolutionary theory does not predict real-time macro-evolution.
: Tropical birds losing the capacity to
: fly don't impress me.
And apparently the observed instances of speciation that have been referred to on this board don't either.
Tell me what would impress you that wouldn't violate the constraints (namely time) of current evolutionary theory.