Conodont biodiversity of the Frasnian-Famennian boundary interval (Upper Devonian) in the Southern Urals


Authors: Tagarieva RC

Published in: Bulletin of Geosciences, volume 88, issue 2; pages: 297 - 314; Received 3 February 2012; Accepted in revised form 2 May 2012; Online 31 July 2012

Keywords: South Urals, boundary F/F interval, brachiopod coquina, conodonts, brachiopods, biofacies,

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In the sections of the West Uralian Folded Zone (western slope of the South Urals) the boundary between the Frasnian and Famennian (F/F) runs at the bottom of the Barma Horizon. It is established within a lithologically homogeneous brachiopod coquina by simultaneous appearance of the conodont Palmatolepis triangularis Sann. and brachiopod Parapugnax markovskii (Yud.). The brachiopod shell stone of the F/F boundary interval subdivided into the Upper rhenana, linguiformis, Lower–Middle triangularis zones are thoroughly characterized by means of conodonts. In the upper linguiformis Zone at the top of the Frasnian, all the sections show a replacement of the palmatolepid biofacies with its abundant taxa of the genus Palmatolepis by the extremely poor, practically monotaxon icriodid biofacies. This is probably due to changes in the global sea levels and the Mass Extinction Event (Upper Kellwasser Event) at the F/F boundary.


Abramova, A.N. 1992. The Frasnian/Famennian boundary in the South Urals, 1-2. International Symposium on Devonian Systém and Its Economic Oil and Mineral Resources, Abstracts. Guilin, China.

Abramova, A.N. 1999. Frasnian stage at the western slope of the South Urals. 54 pp. Institute of Geology, Ufa Scientific Center, Russian Academy of Sciences, Ufa. [in Russian]

Abramova, A.N. & Artyushkova, O.V. 2004. The Frasnian-Famennian boundary in the South Urals. Geological Quarterly 48(3), 217-232.

Alekseev, A.S. 1998. Mass extinctions in the Phanerozoic time. 76 pp. Synopsis for doctoral thesis, Moscow State University, Moscow. [in Russian]

Antsygin, N.Y., Popov, B.A. & Chuvashov, B.I. (eds) 1993. Stratigraphic schemes of the Urals. 151 pp. Ural Branch Russian Academy of Sciences, Yekaterinburg. [in Russian]

Artyushkova, O.V., Maslov, V.A., Pazukhin, V.N., Kulagina, E.I., Tagarieva, R.C.,Mizens, L.I. & Mizens, A.G. 2011a. Devonian and Lower Carboniferous type sections of the western South Urals: Pre-Conference Field Excursion Guidebook. International Conference “Biostratigraphy, Paleogeography and Events in Devonian and Lower Carboniferous”, Ufa, Sterlitamak, Russia, July 20-25, 2011. 92 pp. Ufa.

Artyushkova, O.V., Tagarieva, R.C. & Mizens, A.G. 2011b. The Barma Beds as a biostratigraphic marker of the Famennian base in the South Urals. Biostratigraphy, paleogeography and events in Devonian and Lower Carboniferous (SDS/IGCP 596 joint field meeting): Contributions of International Conference in memory of Evgeny A. Yolkin. Ufa, Novosibirsk, Russia, July 20 - August 10, 2011, 22-24. Publication House of SB Russian Academy of Sciences, “Geo Branch”, Novosibirsk.

Barskov, I.S., Alekseev, A.S., Kononova, L.I. & Migdisova, A.V. 1987. In Menner, V.V. (ed.) Atlas of Upper Devonian and Carboniferous conodonts. 144 pp. Moscow State University, Moscow. [in Russian]

Baryshev, V.N. & Abramova, A.N. 1996. Conodont zonal subdivision of the Upper Devonian deposits on the western slope of the South Urals. Annual Report 1996, 26-30. Institute of Geology, Ufa Scientific Center, Russian Academy of Sciences, Ufa. [in Russian]

Breyvel, M.G., Papulov, G.N. & Khodalevich, A.N. (eds) 1980. Stratigraphic schemes of the Urals. 152 pp. Sverdlovsk. [in Russian]

Domrachev, S.M. 1952. Devonian of the West Preuralian. Devonian of the Karatau Ridge and adjacent regions of the South Urals. Trudy Vsesoyuznogo neftyanogo nauchno-issledovatelskogo geologorazvedochnogo instituta (VNIGRI)/ Proceedings of All-Union Scientific Research Geology and Prospect Institute, New Series 61, 5-121. [in Russian]

Dreesen, R., Sandberg, C.A. & Ziegler, W. 1986. Review of Late Devonian and Early Carboniferous conodont biostratigraphy and biofacies models as applied to the Ardenne Shelf, 27-42. In Bless, M.J.M. & Streel,M. (eds) Late Devonian events around the Old Red Continent. Annales de la Société Géologique de Belgique 109.

House, M.R., Menner, V.V., Becker, R.T., Klapper, G., Ovnatanova, N.S. & Kuzmin, V. 2000. Reef episodes, anoxia and sea-level changer in the Frasnian of the southern Timan (NE Russian Platform), 147-176. In Insalaco, E., Skelton, P.W. & Palmer, T.J. (eds) Carbonate Platform Systems: Components and Interactions. Geological Society of London, Special Publications 17.

Izokh, O.G. & Mizens, A.G. 2009. First evidence on carbon isotopic variations within the Frasnian/Famennian deposits of the South Urals. Proceedings of the 4th Russian Conference on Isotopic Geochronology “Isotopic Systems and Time of Geological Processes” (June 2-4, 2009), 211-212. Institute of Precambrian Geology and Geochronology, Russian Academy of Sciences, Saint Petersburg. [in Russian]

Khodalevich, A.N. (ed.) 1968. Stratigraphic schemes of the Urals. 154 pp. Leningrad. [in Russian]

Klapper, G., Feist, R., Becker, R.T. & House, M.R. 1993. Definition of the Frasnian/Famennian stage boundary. Episodes 16, 433-440.

Johnson, J.C., Klapper, G. & Sandberg, C.A. 1985. Devonian eustatic fluctuations in Euramerica. Geological Society of America Bulletin 96(5), 567-587. View article

Johnson, J.C. & Sandberg, C.A. 1988. Devonian eustatic events in the Western United States and their biostratigraphic responses, 171-178. In McMillan, N.J., Embry, A.F. & Glass, D.J. (eds) The Devonian of the World: Proceedings of the Second International Symposium on the Devonian System, Calgary, Canada. Volume III: Paleoecology and Biostratigraphy.

Markovsky, B.P. 1948. Overview on the Devonian stratigraphy of the western slope of the Middle and South Urals. Proceedings of All-Union Scientific Research Geology and Prospect Institute, New Series 8, 22-28. Gosgeolizdat Publication, Leningrad. [in Russian]

Mizens, A.G. 2007. The brachiopod complexes from Frasnian/Famennian boundary sediments of the sections Bol’shaya Barma and Akkyr of the South Urals (Stratotype and Parastratotype of the Barma Beds). Lithosphere 6, 93-110. [in Russian]

Mizens, A.G. 2009. Upper Devonian brachiopods and biostratigraphy of the Middle and South Urals. 18 pp. Synopsis for Ph.D. thesis (Geology and Mineralogy), Novosibirsk. [in Russian]

Nalivkin, D.V. 1926. On geological structure of the South Urals. Annales de l’Institut des Mines a Leningrade 7, 71-95. [in Russian]

Nalivkin, D.V. 1931. The Paleozoic of the western slope of the South and Middle Urals. Geological map, scale: 1:1,000,000. Explanatory note. [in Russian]

Racki, G. 1998. Frasnian-Famennian biotic crisis: undervalued tectonic control? Palaeogeography, Palaeoclimatology, Palaeoecology 141, 177-198. View article

Racki, G., Racka, M.,Matyja, H. & Devleeschouwer, X. 2002. The Frasnian-Famennian boundary in the South Polish-Moravian shelf basins: integrated event-stratigraphical approach. Palaeogeography, Palaeoclimatology, Palaeoecology 181, 251-297. View article

Rzhonsnitskaya, M.A., Markovskii, B.P., Yudina, Y.A. & Sokiran, E.V. 1998. Late Frasnian Atrypida (Brachiopoda) from the South Urals, South Timan and Kuznetsk Basin (Russia). Acta Palaeontologica Polonica 43(2), 305-344.

Schülke, I. 1995. Evolutive Prozesse bei Palmatolepis in der frühen Famenne-Stufe (Conodonta, Oder-Devon). Göttinger Arbeiten zur Geologie und Paläontologie 67, 1-108.

Sandberg, C.A. 1976. Conodont biofacies of Late Devonian Polygnathus styriacus Zone in western United States, 171-186. In Barnes, C.R. (ed.) Conodont paleocology. Geological Association of Canada Special Paper 15.

Sandberg, C.A. & Dreesen, R. 1984. Late Devonian icriodontid biofacies, models and alternate shallow water zonation, 143-178. In Clark, D.L. (eds) Conodont biofacies and provincialism. Geological Society of America Special Paper 196.

Sandberg, C.A., Ziegler, W., Dreesen, R. & Butler, J.L. 1988. Late Frasnian mass extinction: conodont event stratigraphy, global changes, and possible causes, 263-307. In Ziegler, W. (ed.) 1st International Senckenberg Conference and 5th European Conodont Symposium (ECOS V) Contribution I. Courier Forschungsinstitut Senckenberg 102.

Seddon, G. & Sweet, W.C. 1971. An ecological model for conodonts. Journal of Paleontology 45, 896-880.

Tagarieva, R.C. 2011. Conodonts from the Fransian-Famennian boundary deposits of Akkyr section (western slope of South Urals), 41-51. In Modern paleontology: Classical and new methods - 2011. Paleontological Institute of Russian Academy of Sciences, Moscow. [in Russian]

Veimarn, A.B., Naidin, D.P., Kopaevich, L.F., Alekseev, A.S. & Nazarov, M.A. 1998. Analysis of global catastrophic events under detailed stratigraphic investigations. 190 pp. Moscow State University Publishing House, Moscow. [in Russian]

Veimarn, A.B., Puchkov, V.N., Abramova, A.N., Naidin, D.P., Artyushkova, O.V., Baryshev, V.N., Degtyaryov, K.E., Kononova, L.I.,Maslov, V.A.,Mosejchuk, V.M., Pazukhin, V.N., Pravikova, N.V., Tevelev, A.V. & Yarkova, A.V. 2004. Stratigraphy and geological event at the Frasnian-Famennian boundary in the South Urals. Geological Quarterly 48(3), 233-244.

Walliser, O.H. 1986. Towards a more critical approach to bioevents, 5-16. InWalliser, O.H. (ed.) Global bio-events, Lecture Notes in Earth Sciences 8. Springer Verlag, Berlin & Heidelberg.

Walliser, O.H. 1996. Global events in the Devonian and Carboniferous, 225-250. In Walliser, O.H. (ed.) Global Events and Event Stratigraphy in the Phanerozoic. Springer Verlag, Berlin.

Yudina, A.B., Racki, G., Savage, N.M., Racka, M. & Malkowski, K. 2002. The Frasnian-Famennian events in a deep-shelf succession, Subpolar Urals: biotic, depositional and geochemical records. Acta Palaeontologica Polonica 47(2), 355-372.

Ziegler,W. & Sandberg, C.F. 1990. The Late Devonian Standart Conodont Zonation. Courier Forschungsinstitut Senckenberg 121, 1-115.

Zhamoyda, A.I. 2008. Resolutions of Interdepartmental stratigraphic committee and its permanent commissions 38. 131 pp. All-Russian Institute of Geological Research, Saint Petersburg. [in Russian]