Further reading on the Cambrian-Ordovician boundary:

Abaimova, G. P. 1984. Polozhenie granitsy kembriya i ordovika v razrezakh ust'-kutskoj svity i ee analogov na Sibirskoj platforme [Position of the Cambrian-Ordovician boundary in the sections of the Ust'-Kut Formation and its analogues on the Siberian Platform]. - In: Krasnov, V. I. (ed.) Problema yarusnogo raschleneniya sistem fanerozoya Sibiri [Problem of the stage subdivision of the Phanerozoic Systems in Siberia]. SNIIGGiMS: 27-31; Novosibirsk.

Apollonov, M. K. & Chugaeva, M. N. 1983. Problema granitsy kembriya i ordovika [The problem of the Cambrian-Ordovician boundary]. - In: Apollonov, M. K., Bandeletov, S. M. & Ivshin, N. K. (eds.) Stratigrafiya i paleontologiya nizhnego paleozoya Kazakhstana [Stratigraphy and palaeontology of the Lower Paleozoic of Kazakhstan]: 16-25; Alma-Ata (Nauka).

Borovko, N. G., Sergeyeva, S. P., Volkova, N. A., Golub, I. N., Goryanskij, N. Yu., Popov, L. E. & Khazanovich, K. K. 1984. Opornyj razrez pogranichnykh otlozhenij kembriya i ordovika severo-zapada Russkoj plity (r. Izhora) [Key-section of the Cambrian-Ordovician boundary beds in the north-western part of the Russian Plate (the Izhora River)]. - Izvestiya Akademiya Nauk SSSR, Seriya Geologicheskaya, 7: 54-63; Moscow.

Bruton, D. L., Erdtmann, B. D. & Koch, L. 1982. The Naersnes Section, Oslo Region, Norway: a candidate for the Cambrian-Ordovician boundary stratotype at the base of the Tremadoc Series. - In: Bassett, M. G. & Dean, W. T. (eds.) The Cambrian-Ordovician Boundary: sections, fossil distributions and correlations. National Museum of Wales, Geological Series 3: 61-69.

Chen Junyuan, Teichert, C., Zhou Z. Y., Lin Y. K., Wang Z. H. & Xu J. T. 1983. Faunal sequence across the Cambrian-Ordovician boundary in northern China and its international correlation. - Geologica et Palaeontologica, 17: 1-15.

Druce, E. C., Shergold, J. H. & Radke, B. M. 1982. A reassessment of the Cambrian-Ordovician boundary section at Black Mountains, western Queensland, Australia. - In: Bassett, M. G. & Dean, W. T. (eds.) The Cambrian-Ordovician boundary: sections, fossil distributions, and correlations. - National Museum of Wales, Geological Series, 3: 193-209.

Dubinina, S. V. 1982. Konodontovye assotsiatsii progranichnykh otlozhenij kembriya i ordovika Malogo Karatau (Yuzhnyj Kazakhstan) [Conodont assemblages of the Cambrian and Ordovician boundary sediments of Maly Karatau (southern Kazakhstan)]. - Izvestya Akad. Nauk SSSR, Seriya geologiya, 1982 (4): 47-54.

Erdtmann, B. D. 1982. Palaeobiogeography and environments of plantic dictyonemid graptolites during earliest Ordovician. - In: Bassett, M. G. & Dean, W. T. (eds.) The Cambrian-Ordovician Boundary: sections, fossil distributions and correlations. National Museum of Wales, Geological Series 3: 9-27.

Erdtmann, B. D. 1986. The earliest Ordovician Graptolite-trilobite-conodont succession, Cow Head Group, western Newfoundland and graptolite-based correlation with coeval sequences at Dayangcha, China and Naersnes, Oslo, Norway. - Inter. Working Group Cambrian-Ordovician Boundary, Circ. 22, App. III: 11 pp.

Fortey, R. A., Landing, E. & Skevington, D. 1982. Cambrian-Ordovician boundary sections in the Cow Head Group, western Newfoundland. - In: Bassett, M. G. & Dean, W. T. (eds.) The Cambrian-Ordovician Boundary. Nat. Mus. Wales Geol. Ser., 3: 95-129.

Ji Zailiang & Barnes, C. R. 1996. Uppermost Cambrian and Lower Ordovician conodont biostratigraphy of the Survey Peak Formation, (Ibexian/Tremadoc), Wilcox Pass, Alberta, Canada. - Journal of Paleontology, 70 (5): 871-890.

Kaljo, D., Borovko, N., Heinsalu, H., Khazanovich, K., Mens, K., Popov, L., Sergeyeva, S., Sobolevskaya, R. & Viira, V. 1986. [The Cambrian-Ordovician boundary in the Baltic-Ladoga clint area (North Estonia and Leningrad Region, USSR)]. - Proceedings of the Academy of Sciences of the Estonian SSR, Geology, 35 (3): 97-108.

Kobayashi, T. 1936. The natural boundary between Cambrian and Ordovician systems discussed from the Asiatic standpoint. - Internat. geol. Congress, Rep. 16th Sess., U. S. America 1933, 1: 485-493; Washington, D.C.

Kuzmenko, Yu. T. 1984. [On the correlation of the Cambrian-Ordovician boundary beds in the Moscow syneclise]. - Geologiya i razvedka, 1984 (1): 29-36. Landing, E. 1988.

Cambrian-Ordovician Boundary in North America: Revised Tremadocian Correlations, Unconformities and "Glacioeustasy". - In: Landing, E. (ed.) The Canadian Paleontology & Biostratigraphy Seminar. New York State Museum, Bull. 462: 48-58.

Landing, E., Taylor, M. E. & Erdtmann, B.-D. 1978. Correlation of the Cambrian-Ordovician boundary between the Acado-Baltic and North American faunal provinces. - Geology, 6 (2): 75-78.

Loch, J. D., Stitt, J. H. & Derby, J. R. 1993. Cambrian-Ordovician boundary interval extinctions: implications of revised trilobite and brachiopod data from Mount Wilson, Alberta, Canada. - Journal of Paleontology, 67 (4): 497-517.

Lu Y. H. 1980. [Cambro-Ordovician boundary in western Zhejiang and trilobites contained therein]. - Acta Palaeont. Sinica, 19 (2): 118-135.

Lu Y. H. 1983. [Cambro-Ordovician boundary in China]. - In: Studies on stratigraphic boundaries in China: 11-25; Beijing (Science Press).

Lu Y. H., Lin H. L., Zhou Zh. Y. & Peng Sh. Ch. 1985. [Cambrian-Ordovician boundary of China and its interval zonation]. - Acta Palaeontol. Sinica, 24 (1): 5-17.

Ludvigsen, R. & Westrop, S. R. 1983. Trilobite biofacies of the Cambrian-Ordovician boundary interval in northern North America. - Alcheringa, 7: 301-319.

Martin, F. 1982. Some aspects of Late Cambrian and Early Ordovician acritarchs. - In: Bassett, M. G. & Dean, W. T. (eds.) The Cambrian-Ordovician boundary: sections, fossil distributions, and correlations. National Museum of Wales, Geological Series 3: 29-40.

Mens, K. A., Heinsalu, H., Jegonjan, K., Kurvits, T., Puura, I. & Viira, V. 1996. Cambrian-Ordovician boundary beds in the Pakri Xape section, NW Estonia. - Proc. Estonian Acad. Sci., Ser. Geol., 45 (1): 9-21.

Miller, J. F. 1983. Conodont biostratigraphic horizons with potential for definition of the Cambrian-Ordovician boundary. - In: Papers for the Symposium of the Cambrian-Ordovician and Ordovician-Silurian boundaries, Nanjing, October 1983. Nanjing Institute of Geology and Palaeontology, Academia Sinica: 65-69.

Miller, J. F. 1984. Cambrian and earliest Ordovician conodont evolution, biofacies, and provincialism. - In: Clark, D. L. (ed.) Conodont Biofacies and Provincialism. Spec. Pap. Geol. Soc. America, 196: 43-68.

Miller, J. F. 1988. Conodonts as biostratigraphic tools for redifinition and correlation of the Cambrian-Ordovician boundary. - Geological Magazine, 125 (4): 349-362; Cambridge.

Miller, J. F. & Stitt, J. H. 1985. Stratigraphic position and significance of Jujuyaspis and Iapetognathus in the Wilberns Formations, Texas. - In: Cooper, J. D., Droser, M. L. & Finney, S. C. (eds.) Ordovician Odyssey: Short Papers for the 7th International Symposium on the Ordovician System, Pacific Section, Society for Economic Paleontologists and Mineralogists: 105-108.

Nicoll, R. S. 1992. Evolution of the conodont genus Cordylodus and the Cambrian-Ordovician boundary. - In: Webby, B. D. & Laurie, J. R. (eds.) Global Perspectives on Ordovician Geology. Proceedings of the 6th International Symposium on the Ordovician System, Sydney: 105-113; Rotterdam (A. A. Balkema).

Nicoll, R. S., Laurie, J. R., Shergold, J. H. & Nielsen, A. T. 1992. Preliminary correlation of latest Cambrian to Early Ordovician sea level events in Australia and Scandinavia. - In: Webby, B. D. & Laurie, J. S. (eds.) Global Perspectives on Ordovician Geology: 381-394; Rotterdam (Balkema).

Nicoll, R. S. & Shergold, J. S. 1991. Revised Late Cambrian (pre-Payntonian-Datsonian) conodont biostratigraphy at Black Mountain, Georgina Basin, western Queensland, Australia. - BMR Journal Austr. Geol. Geophys., 12: 93-118.

Peng Sh. Ch. 1983. Cambrian-Ordovician boundary in the Cili-Taoyuan border area, northwestern Hunan. - Papers for the Symposium on the Cambrian.Orddovician and Ordovician- Silurian boundaries. Nanjing: 4-52; Nanjing.

Peng Sh. Ch. 1984. Cambrian-Ordovician Boundary Sections in the Cili-Taoyuan Border Area, Northwestern Hunan. - Acad. Sinica, Developments in Geoscience, Contrib. 27th Intern. Geol. Congr., 1984, Moscow: 65-77.

Peng Shanchi 1984. Cambrian-Ordovician Boundary in the Cili-Taoyuan Border Area, northwestern Hunan with descriptions of relative trilobites. - Stratigraphy and alaeontology of Systematic Boundaries in China, Cambrian-Ordovician Boundary (1): 285-405; Hefei (Anhui Sci. & Tech. Press).

Ripperdan, R. L. & Kirschvink, J. L. 1992. Paleomagnetic results from the Cambrian-Ordovician boundary section at Black Mountains, Georgina Basin, western Queensland, Australia. - In: Webby, B. D. & Laurie, J. R. (eds.) Global Perspectives on Ordovician Geology. Proceedings of the 6th International Symposium on the Ordovician System, Sydney: 93-103; Rotterdam (A. A. Balkema).

Ripperdan, R. L., Magaritz, M. & Kirshvink, J. L. 1993. Carbon isotope and magnetic polarity evidence for non-depositional events within the Cambrian-Ordovician Boundary section near Dayangsha, Jilin Province, China. - Geological Magazine, 130 (4): 443-452.

Ripperdan, R. L., Magaritz, M., Nicoll, R. S. & Shergold, J. H. 1992. Simultaneous changes in carbon isotopes, sea level, and conodont biozones within the Cambrian-Ordovician boundary interval at Black Mountain, Australia. - Geology, 20: 1039-1042.

Runkel, A. C. 1994. Deposition of the uppermost Cambrian (Croixian) Jordan Sandstone, and the nature of the Cambrian-Ordovician boundary in the Upper Mississippi Valley. - Geological Society of America, Bulletin, 106 (4): 492-506.

Vecoli, M., Albani, R., Ghomari, A., Massa, D. & Tongiorgi, M. 1995. Precisions sur la limite Cambrien-Ordovicien au Sahara algerien (secteur de Hassi-Rmel) [The Cambrian-Ordovician boundary in the Algerian Sahara, Hassi-Rmel area]. - Comptes Rendus de l'Academie des Sciences, Serie II. Sciences de la Terre et des Planetes, 320 (6): 515-522.

Wang Z. H. 1983. Out line of the uppermost Cambrian and lowermost Ordovician conodonts in North and Northeast China with some suggestions to the Cambrian-Ordovician boundary. - Papers for the Symposium of the Cambrian-Ordovician and Ordovician-Silurian boundaries, Nanjing: 31-39; Nanjing.

Westrop, S. R. 1989. Trilobite mass extinction near the Cambrian-Ordovician boundary in North America. - In: Donovan, S. K. (ed.) Mass extinctions: Processes and evidence: 89-103, Abb. 5.1-5.4; London (Belhaven Press).

Wolf, R. 1980. The lower and upper boundary of the Ordovician system of some selected regions (Celtiberia, Eastern Sierra Morena) in Spain. Part I: The Lower Ordovician sequence of Celtiberia. - N. Jb. Geol. Pal„ont., Abh., 160 (1): 118-137.

Wright, A. J. & Cooper, R. A. 1983. Cambrian-Ordovician boundary at Mount Patriarch, New Zealand. - In: Papers for the Symposium on the Cambrian-Ordovician and Ordovician-Silurian boundaries, Nanjing, China, October 1983: 62-63; Nanjing (Nanjing Insitute of Geology and Palaeontology, Academia Sinica).

Wright, A. J., Cooper, R. A. & Simes, J. E. 1994. Cambrian and Ordovician faunas and stratigraphy, Mt. Patriarch, New Zealand. - New Zealand Journal of Geology and Geophysics, 37 (4): 437-476.

Yang Jie-dong, Wang Ying-xi, Tao Xian-chong, Li Hui-ming & Wang Zong-zhe 1986. Rb-Sr dating on the Cambrian-Ordovician boundary interval. - In: Chen Jun-yuan (ed.) Aspects of the Cambrian-Ordovician boundary in Dayancha, China: 72-82; Beijing (China Prospect Publishing House).

Zhou Zh. Y., Wang Zh. H., Zhang J. M., Lin Y. K. & Zhang J. L. 1983. Potential Cambrian-Ordovician boundary stratotype sections in North and Northeast China. - In: Papers for the Symposium on the Cambrian-Ordovician and Ordovician-Silurian boundaries, Nanjing: 21-24; Nanjing.

Zhou Zh. Y., Wang Zh. H., Zhang J. M., Lin Y. K. & Zhang J. L. 1984. [Cambrian-Ordovician boundary sections and the proposed candidates for stratotype in north and northeast China]. - Stratigraphy and Palaeontology of Systematic Boundaries in China, Cambrian-Ordovician Boundary (2): 1-57.

Zhou Zh. Y. & Zhang J. L. 1978. [Cambrian-Ordovician boundary of the Tangshan area with descriptions of the related trilobite fauna]. - Acta Palaeont. Sinica, 17 (1): 1-28.