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Original Articles

Session 15: Late Precambrian–Early Palaeozoic Biotas: Origins, Diversifications and Extinctions

Pages 108-110 | Published online: 06 Aug 2009

References

  • Shanchi , Peng and Robison , R.A. 2000 . Agnostoid biostratigraphy across the Middle–Upper Cambrian boundary in Hunan, China . Memoirs of the Paleontological Society , 53 : 1 – 104 .
  • Robison , R.A. 1982 . Some Middle Cambrian agnostoid trilobites from western North America . Journal of Paleontology , 56 : 132 – 160 .
  • Robison , R.A. 1984 . Cambrian Agnostida of North America and Greenland. Part I, Ptychagnostidae . The University of Kansas Paleontological Contributions , 109 : 1 – 59 .
  • Westergård , A.H. 1946 . Agnostidea of the Middle Cambrian of Sweden . Sveriges Geologiska Undersökning C , 477 : 1 – 140 .
  • Roberts , D. 1972 . Penocontemporaneous Folding from the Lower Paleozoic of the Trondheimsfjord Region, Norway . Geol. Magazine , 109 : 235 – 242 .
  • Roberts , D. 1969 . Trace Fossils from the Hovin Groups, Nord Trøndelag, and their Bathymetric Significance . Norges Geologiske Undersøkelse , 258 : 228 – 236 .

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