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A new Late Ordovician Hirnantia brachiopod Fauna from NW Turkey, its biostratigraphical relationships and palaeogeographical setting

  • CAZIBE SAYAR (a1) and L. ROBIN M. COCKS (a2)

Abstract

Late Ordovician fossils, including the distinctive Hirnantia brachiopod Fauna, have been found in Lower Palaeozoic successions in Istanbul and Bolu (Yığılca), western Pontides, NW Turkey. The Middle Ordovician (Sandbian) faunas belong to the cooler-water Mediterranean Province, and they are followed by Katian brachiopods including Sulevorthis, Nicolella, Hesperorthis, Glyptorthis, Saukrodictya and Kullervo and ostracods such as Piretella, Eochilina and Klimphores, which represent deposition in warmer waters; however, the Mediterranean Province usually cooler-water brachiopods Drabovia and Leptestiina also occur. The Pendik Formation includes thin bryozoan-rich limestones which probably represent the Boda Global Warming Event. The overlying turbidites contain a Hirnantia Fauna, developed within a brachiopod–diplograptid association. Above them there are characteristic Llandovery (Rhuddanian–Aeronian) brachiopods, such as Leangella, Eoplectodonta, Stricklandia and Hindella with the corals Halysites, Paleofavosites and Streptelasma. In the Bolu area, Katian brachiopods such as Mcewanella, Dalmanella, Glyptorthis, Christiania, Oligorhynchia, Nicolella, Howellites and Drabovinella also occur, but there the overlying Hirnantia Fauna is developed within a HirnantiaMucronaspis association. The fauna and sediments indicate that the western Pontides were not very cold during the latest Ordovician. Despite Turkey being placed in higher latitudes by previous authors, it seems more probable that the Pontides were at somewhat lower palaeolatitudes, perhaps at about 40°S in those times; however, the precise palaeogeographical position of the terrane remains uncertain: there are no Hirnantian glaciogenic rocks there, such as are found in the Taurides of southern Turkey.

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Corresponding author

Author for correspondence: r.cocks@nhm.ac.uk

References

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Ariç, C. 1955. İstanbul Paleozoik arazisinde bulunan oolitli ve fosilli demir madeni. İstanbul L Teknik Üniversitesi Dergisi 11, 67–8 (in Turkish).
Arpat, E., Tutuncu, K., Uysal, S. & Gōğer, E. 1978. Safranbolu yöresinde Kambriyen-Devoniyen istifi. Türkiye Jeoloji Kurumu 32. Bilimsel ve Teknik Kurultayı, Bildiri Özetleri, pp. 67–8 (in Turkish).
Bergström, J. 1968. Upper Ordovician brachiopods from Västergötland, Sweden. Geologica et Palaeontologia 2, 152, 121.
Boucot, A. J. & Johnson, J. G. 1964. Brachiopods of the Ede Quartzite (Lower Llandovery) of Norderön, Jämptland. Bulletin of the Geological Institute of the University of Uppsala 17, 111, pls 17.
Boucot, A. J., Johnson, J. G. & Staton, R. D. 1964. On some atrypoid, retzioid, and athyridoid Brachiopoda. Journal of Paleontology 38, 805–22, pls 125–8.
Brongniart, A. 1822. Histoire naturelle des crustacés fossils, sous les rapports zoologiques et géologiques savoir: les trilobites. Paris: F.-G. Levrault, 65 pp, 4 pls.
Cocks, L. R. M. 1968. Some strophomenacean brachiopods from the British Lower Silurian. Bulletin of the British Museum (Natural History), Geology 15, 283324, pls 1–14.
Cocks, L. R. M. 1970. Silurian brachiopods of the superfamily Plectambonitacea. Bulletin of the British Museum (Natural History), Geology 19, 139203, pls 1–17.
Cocks, L. R. M. 1982. The commoner brachiopods of the Latest Ordovician of the Oslo-Asker District, Norway. Palaeontology 25, 755–81, pls 78–84.
Cocks, L. R. M. & Fortey, R. A. 2009. Avalonia: a long-lived terrane in the Lower Palaeozoic? In Early Palaeozoic Peri-Gondwana Terranes: New Insights from Tectonics and Biogeography (ed. Bassett, M. G.), pp. 141–55. Geological Society of London, Special Publication no. 325.
Cocks, L. R. M. & Torsvik, T. H. 2002. Earth geography from 500 to 400 million years ago: a faunal and palaeomagnetic review. Journal of the Geological Society, London 159, 631–44.
Dalman, J. W. 1828. Uppställning och Beskrifning af de i Sverige funne Terebratuliter. Konglinga Vetenskapsakademien Handlingar (for 1827), 85–155, pls 1–6.
Davidson, T. 1866–1871. The fossil Brachiopoda. Volume 3, Part 7, Numbers 1–4, Silurian. Palaeontographical Society Monograph 19–24, 1397, pls 1–50.
Dean, W. T., Monod, O., Rickards, R. B., Osman, D. & Bultynck, P. 2000. Lower Palaeozoic stratigraphy and palaeontology, Karadere-Zirze area, Pontus Mountains, northern Turkey. Geological Magazine 137, 555–82.
Dean, W. T., Uyeno, T. T. & Rickards, R. B. 1999. Ordovician and Silurian stratigraphy and trilobites, Taurus Mountains near Kemer, southwestern Turkey. Geological Magazine 136, 373–93.
Demırtaşli, E. 1973. İran, Pakistan ve Türkiye'deki Alt Paleozoyik yaĢlı kayaların stratigrafik korelasyonu. Türkiye Jeoloji Kurumu 50. Yıl Yerbilimleri Kongresi, Tebliğler, pp. 204–22. MTA (Maden Tetkik ve Arama Genel Müdürlüğü). Ankara: General Directorate of Mineral Research and Exploration (in Turkish).
Elles, G. L. & Wood, E. M. R. 1907. British graptolites, Part 6. Palaeontographical Society Monograph 61 (297), 217–72, pls 28–31.
Fortey, R. A. & Cocks, L. R. M. 2005. Late Ordovician global warming: the Boda Event. Geology 33, 405–8.
Gahagan, L. M. & Ross, M. L. 1988. Phanerozoic Plate Tectonic Reconstructions 1987 (coord. C. R. Scotese). Palaeoceanographic Mapping Project. Institute for Geophysics, University of Texas, Technical Report 90.
Gedik, İ. 1977. Orta Toroslarda Conodont Biyostratigrafisi. Türkiye Jeoloji Kurumu Bülteni, 20, 3548 (in Turkish).
Görmuş, S. 1982. Yığılca (Bolu KB) yöresinin stratigrafisi [The stratigraphy of Yığılca (Bolu NW) region]. Yerbilimleri, Hacettepe Üniv Yerbilimleri Enst Bülteni 9, 91110 (in Turkish).
Harper, D. A. T. 1989. Brachiopods from the Upper Ardmillian succession (Ordovician) of the Girvan District, Scotland, Part 2. Palaeontographical Society Monograph 142, 79130, pls 12–22.
Havlíček, V. 1951. The Ordovician Brachiopoda from Bohemia. Rozpravy Ústředního Ústavu Geologického 13, 1315, pls 1–13.
Havlíček, V. 1971. Brachiopodes de l'Ordovicien du Maroc. Notes et Mémoires du Service Géologique du Maroc 230, 1135, pls 1–26.
Havlíček, V. 1977. Brachiopods of the Order Orthida in Czechoslovakia. Rozpravy Ústředního Ústavu Geologického 44, 1327, pls 1–56.
Havlíček, V. & Vanek, J. 1966. The biostratigraphy of the Ordovician of Bohemia. Sbornik Geologického vĕd, Palaeontologie 8, 769.
Hiller, N. 1980. Ashgill Brachiopoda from the Glyn Ceiriog District, North Wales. Bulletin of the British Museum (Natural History), Geology 34, 109216.
Jin, J. & Bergström, J. 2010. True Dalmanella and taxonomic implications for some Late Ordovician dalmanellid brachiopods from North America. GFF 132, 1324.
Kaesler, R. L. (ed.) 1997–2006. Treatise on Invertebrate Paleontology, H. Brachiopoda (Revised), 5 vols. Boulder, Colorado: Geological Society of America & Lawrence, Kansas: University of Kansas Press.
Kozur, H. & Göncüoğlu, M. C. 1998. Main features of the pre-Variscan development of Turkey. Acta Universitatis Carolinae, Geologica 42, 459–64.
Lamont, A. 1935. The Drummuck Group Girvan; a stratigraphical revision, with description of new fossils from the lower part of the group. Transactions of the Glasgow Geological Society 19, 288334.
Lapworth, C. 1877. On the graptolites of County Down. Proceedings of the Belfast Natural History Field Club 1876–77, 107–23.
Marek, L. & Havlíček, V. 1967. The articulate brachiopods of the Kosov Formation (Upper Ashgillian). Vestnik Ústředního Ústavu Geologického 42, 275–84.
M'Coy, F. 1851. On some new Cambro-Silurian fossils. Annals and Magazine of Natrural History (Series 2) 8, 387409.
M'Coy, F. 1852. Description of the British Palaeozoic fossils in the Geological Museum of the University of Cambridge 2. In A Synopsis of the Classification of the British Palaeozoic Rocks, With a Systematic Description of the British Palaeozoic Fossils in the Geological Museum of the University of Cambridge (Sedgwick, A. & M'Coy, F.), pp. 185406. Cambridge: Cambridge University Press.
McKerrow, W. S., Dewey, J. F, & Scotese, C. R. 1991. The Ordovician and Silurian development of the Iapetus Ocean. Special Papers in Palaeontology 44, 165–78.
Mitchell, W. G. 1977. The Ordovician Brachiopoda from Pomeroy, Co. Tyrone. Palaeontographical Society Monograph 130, 1138, pls 1–28.
Monod, O., Kozlu, H., Ghienne, J.-F., Dean, W. T., Günay, Y., Le Hérissé, A., Paris, F. & Robardet, M. 2003. Late Ordovician glaciation in southern Turkey. Terra Nova 15, 249–57.
Nikiforova, O. I. & Andreeva, O. N. 1961. Ordovician and Silurian stratigraphy of the Siberian Platform and its palaeontological basis (Brachiopoda). Trudy Vsesoyuz Nauchno-Issledovatelskii Geologicheskii Institut (VSEGEI) 56, 1412, pls 1–56 (in Russian).
Okay, A. I., Satir, M. & Shang, C. K. 2008. Ordovician metagranitoid from the Anatolide-Tauride Block, northwest Turkey: geodynamic implications. Terra Nova 20, 280–88.
Önalan, M. 1981. İstanbul Ordovisiyen ve Silüriyen istifinin çökelme ortamları. İstanbul Üniversitesi, Yerbilimleri Fakültesi Yayını 2, 161–77 (in Turkish).
Paeckelmann, W. 1938. Neue Beitrage zur Kenntnis der Geology, Palaeontology und Petrography der Umgegend von Konstantinopel. Abhandlungen der Preusslichen Geologischen Landesanstalt (N.F.) 186, 1202.
Reed, F. R. C. 1917. The Ordovician and Silurian Brachiopoda of the Girvan District. Transactions of the Royal Society of Edinburgh 51, 795973, pls 1–26.
Sayar, C. 1964. Ordovician conulariids from the Bosphorus Area, Turkey. Geological Magazine 101, 193–7.
Sayar, C. 1970. Boğaziçi arazisinde Ordovisiyen Conulariaları. Türkiye Jeoloji Kurumu Bülteni 12, 140–56 (in Turkish).
Sayar, C. 1975. Kocaeli Silüriyen'inde Landoveriyen Brakiyopodları. Tübitak v Bilim Kongresi, pp. 135–60 (in Turkish).
Sayar, C. 1979 a. İstanbul Boğazı ve çevresinde Ordovisiyen-Silüriyen Sınırı. Türkiye Jeoloji Kurumu Bülteni 22, 161–7 (in Turkish).
Sayar, C. 1979 b. İstanbul Alt Paleozoyik Serilerinde Brachiopod-Diplograptid zonu fosilleri. Türkiye Jeoloji Kurumu, Altınlı Sempozyumu, pp. 27–35 (in Turkish).
Sayar, C. 1979 c. The Biostratigraphy and Brachiopods of the Kayalidere Graywackes, North of Pendik, Istanbul, Turkey. Istanbul Technical University (limited circulation), 128 pp, 36 pls (in Turkish).
Sayar, C. 1984. İstanbul çevresinden Ordovisiyen Brakiyopodları. Türkiye Jeoloji Kurumu Bülteni 26, 99109 (in Turkish).
Sayar, C. & Schallreuter, R. 1989. Ordovician ostracods from Turkey. Neue Jarhbuch Geologische und Paläontologische Monatshefte 1989, 233–42.
Sowerby, J. de C. 1839. Shells. In The Silurian System (Murchison, R. I.), pp. 579712. London: John Murray.
Temple, J. T. 1965. Upper Ordovician brachiopods from Poland and Britain. Acta Palaeontolographica Polonica 10, 379450.
Temple, J. T. 1968. The Lower Llandovery (Silurian) brachiopods from Keisley, Westmorland. Palaeontographical Society Monograph 122, 158, pls 1–10.
Temple, J. T. 1970. The Lower Llandovery brachiopods and trilobites from Ffridd Mathrafal near Meifod, Montgomeryshire. Palaeontographical Society Monograph 124, 176, pls 1–19.
Toghill, P. 1970. Highest Ordovician (Hartfell Shales) graptolite faunas from the Moffat area, South Scotland. Bulletin of the British Museum (Natural History), Geology 19, 126, pls 1–16.
Tokay, M. 1952. Contribution à l'étude géologique de la region comprise entre Ereğli, Alaplı, Kızıltepe et Alacaağzı. Mining Research and Exploration Institute of Turkey Bulletin 42–43, 37–78.
Torsvik, T. H. & Cocks, L. R. M. 2011. The Palaeozoic palaeogeography of central Gondwana. In The Formation and Evolution of Africa: A Synopsis of 3.8 Ga of Earth History (eds Van Hinsbergen, D. J. J., Buiter, S. J. H., Torsvik, T. H., Gaina, C. & Webb, S. J.), pp. 137–66. Geological Society of London, Special Publication no. 357.
Webby, B. D. 1984. Ordovician reefs and climate: a review. Palaeontological Contributions from the University of Oslo 295, 89100.
Williams, A. 1951. Llandovery brachiopods from Wales with special reference to the Llandovery district. Quarterly Journal of the Geological Society, London 107, 85136, pls 3–8.
Williams, A. 1963. The Caradocian brachiopod faunas of the Bala District Merionethshire. Bulletin of the British Museum (Natural History), Geology 8, 327471, pls 1–16.
Williams, A. & Wright, A. D. 1963. The classification of the ‘Orthis testudinaria’ group of brachiopods. Journal of Paleontology 37, 132, pls 1, 2.
Wright, A. D. 1964. The fauna of the Portrane Limestone II. Bulletin of the British Museum (Natural History), Geology 9, 157256.
Ziegler, A. M., Hansen, K. S., Johnson, M. E., Kelly, M. A., Scotese, C. R. & Van der Voo, R. 1977. Silurian continental distributions, palaeogeography, climatology and biogeography. Tectonophysics 40, 3151.

Keywords

A new Late Ordovician Hirnantia brachiopod Fauna from NW Turkey, its biostratigraphical relationships and palaeogeographical setting

  • CAZIBE SAYAR (a1) and L. ROBIN M. COCKS (a2)

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