Earliest occurrence of the Hirnantia Fauna in the Prague Basin (Czech Republic)

 

Authors: Mergl M

Published in: Bulletin of Geosciences, volume 86, issue 1; pages: 63 - 70; Received 11 November 2010; Accepted in revised form 24 January 2011; Online 22 February 2011

Keywords: Hirnantia Fauna, Hirnantia, Kinnella, Ordovician, Hirnantian, Králův Dvůr Formation, Prague Basin,

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Abstract

The Hirnantia Fauna was observed at a new stratigraphic level in the topmost Králův Dvůr Formation at Praha-Řeporyje. Up to now this distinctive late Ordovician fauna has been known only from the summit of the Kosov Formation in the Prague Basin. The newly observed fauna consists of draboviids Hirnantia sagittifera, Kinnella kielanae kielanae, taxonomically poor ostracods, a machaeridian Lepidocoleus, a new undetermined carpoid, and the very rare Mucronaspis. The fauna is much poorer than the fauna of the 'Perní­k Bed' below. The presence of the Hirnantia Fauna at this new level indicates a significant cooling and eustatic fall in the sea level resulting in a shallow subtidal environment (BA 3-4) prior to the deposition of glaciomarine diamictites at the base of the Kosov Formation.

References

Bergström, J. 1968 Upper Ordovician Brachiopods from Västergötland, Sweden. Geologica et Palaeontologica 2, 1–35.

Brenchley, P.J. & Cullen, B. 1984 The environmental distribution of associations belonging to the Hirnantia fauna – Evidence from North Wales and Norway, 113–125. In Bruton, D.L. (ed.) Aspects of the Ordovician System. Palaeontological Contributions from the University of Oslo 295. Universitetsforlaget, Oslo.

Brenchley, P.J. & Newall, G. 1984 Late Ordovician environmental changes and their effect on faunas, 65–79. In Bruton, D.L. (ed.) Aspects of the Ordovician System. Palaeontological Contributions from the University of Oslo 295. Universitetsforlaget, Oslo.

Brenchley, P.J. & Štorch, P. 1989 Environmental changes in the Hirnantian (upper Ordovician) of the Prague Basin, Czechoslovakia. Geological Journal 24, 165–181.View article

Chen Xu, Rong Jia-yu, Li Yue&Boucot, A.J. 2004 Facies patterns and geography of the Yangtze region, South China, through the Ordovician and Silurian transition. Palaeogeography, Palaeoclimatology, Palaeoecology 204, 353–372.View article

Cocks, L.R.M. 1982 The commoner brachiopods of the latest Ordovician of the Oslo-Asker District, Norway. Palaeontology 25(4), 755–781.

Cocks, L.R.M. & Fortey, R.A. 2002 The palaeogeographical significance of the latest Ordovician fauna from the Pangsha-Pye Formation of Burma. Special Papers on Palaeontology 67, 57–76.

Cocks, L.R.M & Rong Jia-yu 2008. Earliest Silurian faunal survival and recovery after the end Ordovician glaciation: evidence from the brachiopods. Earth and Environmental Science Transactions of the Royal Society of Edinburgh 98, 291–301.

Harper, D.A.T., Mitchell, W.I. & Rong Jia-yu 1994. New faunal data from the highest Ordovician rocks at Pomeroy, County Tyrone, Northern Ireland. Scottish Journal of Geology 30(2), 187–190.View article

Havlíček, V. 1950 Ramenonožci českého ordoviku. Rozpravy Ústředního ústavu geologického 13, 1–72.

Havlíček, V. 1967 Brachiopoda of the suborder Strophomenidina in Czechoslovakia. Rozpravy Ústředního ústavu geologického 33, 1–235.

Havlíček, V. 1977 Brachiopods of the order Orthida in Czechoslovakia. Rozpravy Ústředního ústavu geologického 44, 1–327.

Havlíček, V. 1982 Ordovician in Bohemia: development of the Prague Basin and its benthic communitites. Sborník geologických věd, Geologie 37, 103–136.

Havlíček,V. 1989 Climatic changes and development of benthic communities through the Mediterranean Ordovician. Sborník geologických věd, Geologie 44, 179–116.

Havlíček, V. 1990 Mediterranean and Malvinokafric Provinces: new data on the Upper Ordovician and Lower Silurian brachiopods. Časopis pro mineralogii a geologii 35(1), 1–13.

Havlíček, V. 1994 Kosovian inarticulate brachiopods and their ancestors (Late Ordovician, Prague Basin). Věstník Českého geologického ústavu 69(1), 59–67.

Hiller, N. 1980 Ashgill Brachiopoda from the Glyn Ceiriog District, north Wales. Bulletin of the British Museum (Natural History), Geology 34(3), 109–216.

Jaeger, H., Havlíček, V. & Schönlaub, H.P. 1975 Biostratigraphie der Ordovizium/Silur-Grenz in der Südalpen – Ein beitrag zur discussion um die Hirnantia-Fauna. Verhandlungen Geologische Bundesanstalt A 4, 271–189.

Kříž, J. & Steinová, M. 2009 Uppermost Ordovician bivalves from the Prague Basin (Hirnantian, Perunica, Bohemica). Bulletin of Geosciences 84(3), 409–436.View article

Lamont, A. 1935 The Drummuck Group, Girvan; a stratigraphic revision, with description of new fossils from the lower part of the group. Geological Society of Glasgow, Transactions 19, 288–334.View article

Leone, F., Hammann, W., Laske, R., Serpagli, E. & Villas, E. 1991 Lithostratigraphic units and biostratigraphy of the post-Sardic Ordovician sequence in south-west Sardinia. Bollettino della Societa Paleontologica Italiana 30(2), 201–235.

Lespérance, P.J. & Sheehan, P.M. 1976 Brachiopods from the Hirnantian stage (Ordovician-Silurian) at Percé, Quebec. Palaeontology 19(4), 716–731.

Marek, L. 1951 Nové nálezy ve vrstvách kosovských (d?2). Sborník Ústředního ústavu geologického 18, 1–12.

Marek, L. 1963 Bellerophontid gastropods in the Kosov Beds (Ordovician) of Bohemia. Věstník Ústředního ústavu geologického 28, 273–276.

Marek, L. & Havlíček, V. 1967 The articulate brachiopods of the Kosov Formation (Upper Ashgill). Věstník Ústředního ústavu geologického 42, 275–284.

M’Coy, F. 1851 On some new Cambro-Silurian fossils. Annals and Magazine of Natural History (series 2) 8, 387–409.View article

Mélou, M. 1987 Découverte de Hirnantia sagittifera (M’Coy, 1851) (Orthida, Brachiopoda) dans l’Ordovicien supérieur (Ashgillien) de l’extrémité occidentale du Massif Armoricain. Geobios 20(5), 679–685.View article

Mergl, M. 1986 Craniopsidae (Inarticulata, Brachiopoda) in the Ordovician-Silurian sequence of the Prague Basin (Bohemia). Věstník Ústředního ústavu geologického 61, 183–186.

Owen, A.W., Harper, D.A.T. & Rong Jia-yu 1991. Hirnantian trilobites and brachiopods in space and time, 179–190. In Barnes, C.R. & Williams, S.H. (eds) Advances in Ordovician Geology, Geological Survey of Canada, Paper 90-9.

Reed, F.R.C. 1915 Supplementary memoir on new Ordovician and Silurian fossils from the Northern Shan States. Palaeontologia Indica (New Series) 6(1), 1–98.

Rong Jia-yu 1979. The Hirnantia fauna of China with the comments on the Ordovician-Silurian boundary. Acta Stratigraphica Sinica 3(1), 1–29.

Rong Jia-yu 1984. Distribution of the Hirnantia fauna and its meaning, 101–112. In Bruton, D.L. (ed.) Aspects of the Ordovician System. Palaeontological Contributions from the University of Oslo 295. Universitetsforlaget, Oslo.

Rong Jia-yu 1986. Ecostratigraphy and community analysis of Late Ordovician and Silurian in southern China, 1–24. In Palaeontological Society of China (ed.) Selected papers of the 13th and 14th Annnual Convention of the Palaeontological Society of China. Anhui Science and Technology Publishing House, Hefei.

Rong Jia-yu, Chen Xu & Harper, D.A.T. 2002 The latest Ordovician Hirnantia Fauna (Brachiopoda) in time an space. Lethaia 35, 231–249.View article

Rong Jia-yu & Harper, D.A.T. 1988 A global synthesis of the latest Ordovician Hirnantian brachiopod faunas. Transactions of the Royal Society of Edinburgh, Earth Sciences 79, 383–402.View article

Rong Jia-yu & Harper, D.A.T. 1999 Brachiopod survival and recovery from the latest Ordovician mass extinction in South China. Geological Journal 34, 321–348.View article

Rong Jia-yu & Li Rong-yu 1999. A silicified Hirnantia Fauna (latest Ordovician brachiopods) from Guizhou, Southwest China. Journal of Paleontology 73(5), 831–849.View article

Rong Jia-yu & Shen Shu-zhong 2002. Comparative analysis of the end-Permian and end-Ordovician brachiopod mass extinctions and survival in South China. Palaeogeography, Palaeoclimatology, Palaeoecology 188, 25–38.View article

Rong Jia-yu & Xu Han-kui 1987. Terminal Ordovician Hirnantia Fauna of the Xainza district, northern Xizang. Bulletin of Nanjing Institute of Geology and Palaeontology, Academia Sinica 11, 1–19.

Rong Jia-yu, Boucot, A.J., Harper, D.A.T., Zhan Ren-Bin & Neuman, R.B. 2006 Global analyses of brachiopod faunas through the Ordovician and Silurian transition: reducing the role of the Lazarus effect. Canadian Journal of Earth Sciences 43, 21–39.

Schuchert, C. & Cooper, G.A.1932. Brachiopod genera of the suborders Orthoidea and Pentameroidea. Memoirs of the Peabody Museum of Natural History 4(1), xii+1–270.

Sheehan, P.M. 2001 The late Ordovician mass extinction. Annual Reviews of Earth and Planetary Sciences 29, 331–364.View article

Stott, C.A. & Jisuo Jin 2007. The earliest known Kinnella, an orthide brachiopod from the Upper Ordovician of Manitoulin Island, Ontario, Canada. Acta Palaeontologica Polonica 52(3), 535–546.

Štěpánek, P. 1984 Geologie pankrácké štoly. Unpublished report, Czech Geological Survey, Prague.

Štorch, P. 1982 Ordovician-Silurian in the northernmost part of the Prague Basin (Barrandian, Bohemia). Věstník Ústředního ústavu geologického 57(4), 231–236.

Štorch, P. 1986 Ordovician-Silurian boundary in the Prague Basin (Barrandian area, Bohemia). Sborník geologických věd, Geologie 41, 69–103.

Štorch, P. 1986 Ordovician-Silurian boundary event in Bohemia (Prague basin-Barrandian area), 133–138. In Walliser, O. (ed.) Lecture Notes in Earth Sciences. Springer-Verlag Berlin, Heidelberg.View article

Štorch, P. 1990 Upper Ordovician – lower Silurian sequences in the Bohemian Massif, central Europe. Geological Magazine 127, 225–239.View article

Štorch, P. 1991 Faciální vývoj, stratigrafie a korelace svrchního ordoviku a spodního siluru pražské pánve (Barrandien). Unpublished Ph.D. thesis, Czech Geological Survey, Prague.

Štorch, P. 1994 Llandovery-Wenlock boundary beds in the graptolite-rich sequence of the Barrandian area (Bohemia). Journal of the Czech Geological Society 39, 163–182.

Štorch, P. & Mergl, M. 1989 Králodvor/Kosov boundary and the late Ordovician environmental changes in the Prague Basin (Barrandian area, Bohemia). Sborník geologických věd, Geologie 44, 117–153.

Temple, J.T. 1965 Upper Ordovician brachiopods from Poland and Britain. Acta Palaeontologica Polonica 10(3), 379–427.

Waagen, W. 1884 Salt Range fossils, vol. I. Productus-Limestone fossils, Brachiopoda. Memoirs of the Geological Survey of India, Palaeontologica Indica (series 13), fasc. 4(3–4), 547–728.

Wright, A.D. 1968 A westward extension of the Upper Ashgillian Hirnantia Fauna. Lethaia 1, 352–367.View article