Page "Cloudinid" Paragraph 8
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However, Hahn & Pflug ( 1985 ) and Conway Morris et al .. ( 1990 ) doubted both Germs ' and Glaessner's suggested relationships, and were unwilling to classify it to anything more than its own family, Cloudinidae.
Since the tubes had an open base, creating a single living space rather than a series of separate chambers, Cloudina is more likely to be a stem group polychaete worm, in other words an evolutionary " aunt " or " cousin " of more recent polychaetes.
However, as with so many Ediacaran life forms, there is great debate surrounding its position in the tree of life, and classification between the kingdom and family level may be unwise.
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