>"I am doing a project, can you tell me if molluscs diversified
>before the Cambrian explosion or during it,
The Cambrian "explosion" is an artifact of poor work. In fact most of
the critters which Gould etc touted as new phyla were in fact
onychophorans.
>and also if tubeworms are closely related to molluscs. "
Not particularly.
--
Andrew Grebneff
165 Evans St, Dunedin 9001, New Zealand
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