"I'm just an evolutionist with a model that some think is creationistic,
because I recognize the Cambrian explosion as a fact that implies a period
of very rapid evolution."
That's very interesting, because Gould hypothesizes much the same. He
calls the Cambrian explosion a "sigmoidal fraud" because he believes the
part we see in the fossil record would be the high slope region of a
sigmoidal curve plotting diversity versus time, with the initial low slope
region being a time of very slow diversification due to low population
numbers and the ending low slope region being a time of very slow
diversification due to the filling of all available niches. Glenn's worm
tunnelss and shell-less mollusks would come from the initial period of
diversification.
Kevin L. O'Brien
"Good God, consider yourselves fortunate that you have John Adams to abuse,
for no sane man would tolerate it!" William Daniels, _1776_