Late Permian to Middle Triassic palaeogeographic differentiation of key ammonoid groups: evidence from the former USSR

Article English OPEN
Zakharov, Yuri D. ; Popov, Alexander M. ; Biakov, Alexander S. (2008)

Palaeontological characteristics of the Upper Permian and upper Olenekian to lowermost Anisian sequences in the Tethys and the Boreal realm are reviewed in the context of global correlation. Data from key Wuchiapingian and Changhsingian sections in Transcaucasia, Lower and Middle Triassic sections in the Verkhoyansk area, Arctic Siberia, the southern Far East (South Primorye and Kitakami) and Mangyshlak (Kazakhstan) are examined. Dominant groups of ammonoids are shown for these different regions. Through correlation, it is suggested that significant thermal maxima (recognized using geochemical, palaeozoogeographical and palaeoecological data) existed during the late Kungurian, early Wuchiapingian, latest Changhsingian, middle Olenekian and earliest Anisian periods. Successive expansions and reductions of the warm– temperate climatic zones into middle and high latitudes during the Late Permian and the Early and Middle Triassic are a result of strong climatic fluctuations.
  • References (168)
    168 references, page 1 of 17

    Abich H.W. 1878. Geologische Forschungen in den Kaukasischen Ländern. Th. 1. Eine Bergkalk-fauna aus der Araxes-Enge bei Djoulfa in Armenien. (Geological investigation in the Caucasus area. Pt. 1 Limestone Mount fauna from the Djulfa canyon in Armenia.) Vienna: Alfred Hölder.

    Alcala-Herrera J.A., Grossman E.L. & Gartner S. 1992. Nannofossils diversity and equitability and fine-fraction d13C across the Cretaceous/Tertiary boundary at Walvis Ridge Leg 74, South Atlantic. Marine Micropaleontology 20, 77-88.

    Angiolini L., Darbyshire D.P.F., Leng M.J., Stephenson M.H., Brewer T.S., Berra F. & Jadoul F. 2006. Evidence of climate change from brachiopods within the Lower Permian of Oman. Paper presented at the Second International Palaeontological Congress, 17-21 June, Beijing, China.

    Astahova [Astachova] T.V. 1960. Novye rannetriasovye ceratity Mangyšlaka. (New Early Triassic ceratites of Mangyshlak.) In B.P. Markovskij (ed.): Novye vidy drevnih rastenij i bespozvonocˇnyh SSSR 2. (New species of fossil plants and invertebrates of the USSR 2.) Pp. 139-159. Moscow: Gosgeoltekhizdat.

    Bajarunas M.V. 1936. Vozrast cloev c Doricranites (Age of the Doricranites beds.) Izvestija Akademii Nauk SSSR, Serija Geologicˇeskaja 4, 539-546.

    Balini M., Gavrilova V.A. & Nicora A. 2000. Biostratigraphical revision of the classic Lower Triassic Dolnapa section (Mangyshlak, west Kazakhstan). Zentralblat für Geologie und Paläontologie, Teil I (1998), 1441-1462.

    Bando Y. 1973. On the Otoceratidae and Ophiceratidae. Science Report of the Tohoku University, Series 2 (Geology), Special Vol. 6, 337-351.

    Bando Y. 1979. Upper Permian and Lower Triassic ammonoids from Abadeh, central Iran. Memoirs of the Faculty of Education, Kagawa University, Part 2, 29, 103-136.

    Bando Y. 1980. On the Otoceratacean ammonoids in the central Tethys with a note on their evolution and migration. Memoirs of the Faculty of Education, Kagawa University, Part 2, 30, 23-149.

    Bando Y. & Ehiro M. 1982. On some Lower Triassic ammonites from the Osawa formation at Asadanuki, Towa-cho, Tome-gun, Miyagi Prefecture, Northeast Japan. Transactions and Proceedings of the Palaeontological Society of Japan, New Series 127, 375-385.

  • Metrics
    No metrics available
Share - Bookmark