To tie this to mollusks, there are several good examples of evolutionary
transitions in the Mollusca, as might be expected from a group with such a
good fossil record.
An article on the decision may clarify things a bit.

http://www.wichitaeagle.com/news/local/learning/docs/whatitmeans0812_txt.htm

The decision is to no longer require evolution as part of the biology
curriculum rather than to require it not be taught.  Still, it reflects
scientific and theological ignorance, and a much better statement was
rejected in favor of this one.

David Campbell

"Old Seashells"

Department of Geological Sciences
CB 3315 Mitchell Hall
University of North Carolina at Chapel Hill
Chapel Hill NC 27599-3315
USA

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919-962-0685
FAX 919-966-4519

"He had discovered an unknown bivalve, forming a new genus"-E. A. Poe, The
Gold Bug