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REFERENCES

Gould, S.J. 1989. Wonderful Life. The Burgess Shale and the Nature of History. Norton, New York.

Ramsköld, L. and Hou, X.G. 1991. New Early Cambrian animal and onychophoran affinities of enigmatic metazoans. Nature, 35:225-228.

Ramsköld, L. 1992. The second leg row of Hallucigenia discovered. Lethaia, 25:221-224.