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Contents
Microscopy; porifera; mesozoa and placozoa; cnidaria and ctenophora; platyhelminthes and gnathostomulida; nemertea (rhynchocoela); pseudocoelomates; annelida; mollusca; lesser protostomes; arthropoda; the lophophorates; echinodermata; lesser deuterostomes and chordates.
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