 Instead he argued that they were evidence of externally visible segmentation, which is found in polychaetes but not in molluscs.He concluded that "Wiwaxia" was an evolutionary "aunt" of polychaetes, while "Odontogriphus" could be an evolutionary "aunt" of polychaetes or of molluscs or of brachiopods – or even a "great aunt" of all three, as it could have been an early member of the lophotrochozoa, a "super-phylum" that includes the polychaetes, molluscs and brachiopods.In January 2007 Caron, Scheltema, "et al."