It is one thing to say that one mollusk species can arise from another
(microevolution), but quite another to say that a crustacean species could
arise from a mollusk species (macroevolution).  No self-respecting
creationist will deny that microevolution (an observable process) can and
does occur.  We simply deny credence to claims of that which is unobservable.
 There is no evidence of phylum giving rise to another phylum.  There is no
such evidence in the fossil record, which is precisely why the "Process of
Evolution" remains a theory.  To believe in that which is unobservable is to
have faith, whether you are a creationist or an evolutionist.

Doug Shelton
Mobile, Alabama