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Unread 03-29-2005, 11:15 AM   #15
bobkoure
Cooling Savant
 
Join Date: Feb 2003
Location: USA - Boston area
Posts: 798
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Quote:
Originally Posted by Tempus
I wonder why none have evolved
Sometimes it's just something random, too. For instance, there are evidences of all sorts of bi-laterally symmetrical critters in the Triassic, but not after (and there are traces of a marker for a meteorite hit at the end boundary of that era...iridium?). It might be that, had that meteorite not hit, or hit a million years earlier or later, some of these forms might have survived - possibly including something that might have become, say, a fish with six caudal fins, progressing possibly to some sort of air-breather.
Just a thought, of course...
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