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3. Early Cambrian fossils from South Australia;Bengtson;Association of Australian Palaeontologists, Brisbane, Memoir,1990
4. Relations between conodont provincialism and the changing palaeogeography during the Early Palaeozoic;Bergström;Palaeozoic Palaeogeography and Biogeography,1990
5. Breakup of a supercontinent between 625 Ma and 555 Ma: new evidence and implications for continental histories