On the connection of the Early Cambrian basins of Western Mongolia and Southern France on malacological data

Cover Page

Cite item

Full Text

Open Access Open Access
Restricted Access Access granted
Restricted Access Subscription Access

Abstract

The study of previously collected fossils and new materials on Cambrian mollusks from the Bayangol Formation of Western Mongolia (Zavkhan structural-facies zone) revealed a significant similarity in the taxonomic composition of the mollusk assemblages of Western Mongolia and Southern France (Heraultia Limestone, Marcou Formation, Montagne Noire). In addition to the previously reported four common species (Latouchella korobkovi (Vostokova, 1962), Protoconus orolgainicus (Zhegallo, 1996), Purella tenuis Zhegallo, 1996, and Watsonella crosbyi Grabau, 1900), we have identified 10 more common species for these regions: Auricullina auriculata (Vassiljeva, 1990), Bemella jacutica (Missarzhevsky, 1966), “Calbyella” multicostata Missarzhevsky, 1995, Cambroscutum concameratum Kerber, 1988, Helcionella sp., Merismoconcha tommotica (Zhegallo, 1996), Obtusoconus amplus (Zhegallo, 1982), Prosinuites tripartitus Kerber, 1988, Purella layracensis (Kerber, 1988), and Securiconus sp. We have to reconsider the existing reconstruction of faunal relations of paleobasins on the western frame of Gondwana in terms of substantiating a close faunal exchange with the Zavkhan terrane, which during the Early Cambrian was a part of microcontinents chain located at low latitudes between the Siberian Platform in the west and Gondwana in the east.

Full Text

Restricted Access

About the authors

P. Yu. Parkhaev

Borisyak Paleontological Institute, Russian Academy of Sciences

Author for correspondence.
Email: pparkh@paleo.ru
Russian Federation, Moscow

E. A. Zhegallo

Borisyak Paleontological Institute, Russian Academy of Sciences

Email: pparkh@paleo.ru
Russian Federation, Moscow

D. Dorjnamjaa

Paleontological Institute, Mongolian Academy of Sciences

Email: pparkh@paleo.ru
Mongolia, Ulan-Bator

References

  1. Peng S. C., Babcock L. E., Ahlberg P. Chapter 19. The Cambrian Period / Geologic Time Scale 2020. Gradstein F. M., Ogg J. G., Schmitz M. D., Ogg G. M. (eds.). Amsterdam: Elsevier, 2020. P. 565–629.
  2. Torsvik T. H., Cocks L. R.M. New global palaeogeographical reconstructions for the Early Palaeozoic and their generation / Early Palaeozoic Biogeography and Palaeogeography. Harper D. A.T., Servais T. (eds.). L.: Geological Society, 2013. P. 5–24 (Memoirs of Geological Society of London. V. 38).
  3. Bold U., Crowley J. L., Smith E. F., Sambuu O., Macdonald F. A. Neoproterozoic to Early Paleozoic tectonic evolution of the Zavkhan terrane of Mongolia: Implications for continental growth in the Central Asian orogenic belt // GSA Lithosphere. 2016. V. 8. № 6. P. 729–750.
  4. Есакова Н. В., Жегалло Е. А. Фауна и биостратиграфия нижнего кембрия Монголии. М.: Наука, 1996. 216 с. (Тр. Совм. Рос.-Монгол. палеонтол. экспед. Вып. 46).
  5. Воронин Ю. И., Воронова Л. Г., Григорьева Н. В., Дроздова Н. А., Жегалло Е. А., Журавлев А. Ю., Рагозина А. Л., Розанов А. Ю., Саютина Т. А., Сысоев В. А., Фонин В. Д. Граница докембрия и кембрия в геосинклинальных областях. М.: Наука, 1982. С. 1–152. (Тр. Совм. Сов.-Монгол. палеонтол. экспед. Вып. 18).
  6. Миссаржевский В. В. Раннекембрийские хиолиты и гастроподы Монголии // Палеонтологический журнал. 1981. № 1. С. 21–28.
  7. Cobbold E. S. Lower Cambrian faunas from Hérault, France // Annals and Magazine of Natural History. Ser. 10. 1935. V. 16. P. 25–49.
  8. Kerber M. Mikrofossilien aus unterkambrischen Gesteinen der Montagne Noire, Frankreich // Palaeontographica. 1988. Abt. A. V. 202. P. 127–203.
  9. Devaere L., Clausen S., Steiner M., Álvaro J., Vachard D. Chronostratigraphic and palaeogeographic significance of an Early Cambrian microfauna from the Heraultia Limestone, northern Montagne Noire, France // Palaeontologia Electronica. 2013. V. 16. Iss. 2. № 17A. P. 1–91.
  10. Parkhaev P. Yu., Demidenko Yu. E. Zooproblematica and Mollusca from the Lower Cambrian Meishucun Section (Yunnan, China), and Taxonomy and Systematics of the Cambrian Small Shelly Fossils of China // Paleontological Journal. 2010. V. 44. № 8. P. 883–1161.
  11. Landing E. Paleoecology and distribution of the Early Cambrian rostroconch Watsonella crosbyi Grabau // Journal of Paleontology. 1989. V. 63. № 5. P. 566–573.
  12. Parkhaev P. Yu. Molluscs and siphonoconchs / The Cambrian Biostratigraphy of the Stansbury Basin, South Australia. Alexander E. M., Jago J. B., Rozanov A. Yu. Zhuravlev A. Yu. (еds.). Moscow: MAIK Nauka / Interperiodica, 2001. P. 133–210.
  13. Пархаев П. Ю. Кембрийские моллюски Австралии: обзор таксономии, биостратиграфии и палеобиогеографии // Стратиграфия. Геологическая корреляция. 2019. Т. 27. № 2. С. 52–78.
  14. Guo J.-F., Li G.-X., Qiang Y.-Q., Son Z.-C., Zh. Zh.-F., Han J., Wang W.-Z. Watsonella crosbyi from the lower Cambrian (Terreneuvian, Stage 2) Yanjiahe Formation in Three Gorges Area, South China // Palaeoworld. 2021. V. 30. P. 1–19.
  15. Васильева Н. И. Мелкая раковинная фауна и биостратиграфия нижнего кембрия Сибирской платформы. СПб.: ВНИГРИ, 1998. 139 с.
  16. Розанов А. Ю., Пархаев П. Ю., Демиденко Ю. Е., Карлова Г. А., Иванцов А. Ю., Коровников И. В., Шабанов Ю. Я., Лучинина В. А., Малаховская Я. Е., Мельникова Л. М., Наймарк Е. Б., Пономаренко А. Г., Раевская Е. Г., Скорлотова Н. А., Сундуков В. М., Токарев Д. А., Ушатинская Г. Т., Киприянова Л. Д. Ископаемые из стратотипов ярусов нижнего кембрия. М.: ПИН РАН, 2010. 228 с.
  17. Розанов А. Ю., Миссаржевский В. В. Биостратиграфия и фауна нижних горизонтов кембрия. М.: Наука, 1966. 127 с. (Тр. Геол. ин-та АН СССР. Вып. 148).
  18. Миссаржевский В. В. Новые окаменелости из древнейших отложений кембрия Сибирской платформы // ДАН. 1995. Т. 344. № 5. С. 665–668.
  19. Миссаржевский В. В. Древнейшие скелетные окаменелости и стратиграфия пограничных толщ докембрия и кембрия. М.: Наука, 1989. 238 с. (Тр. Геол. ин-та АН СССР. Вып. 443).
  20. Yu W. Yangtze micromolluscan fauna in Yangtze region of China with notes on the Precambrian-Cambrian boundary // Stratigraphy and palaeontology of systemic boundaries in China. Precambrian-Cambrian boundary. 1987. V. 1. P. 19–344.

Supplementary files

Supplementary Files
Action
1. JATS XML
Download
2. Fig. 1. Paleogeographic reconstruction for the Early Cambrian time [2]; designations of the main continents and large terranes: A – Avalonia, AC – Arctic Alaska and Chukotka, Ab – Australia, Am– Armorian terranes, An – Annamia, Ar – Arabia, Af – Africa, B – Baltic platform, VA – East Antarctica , G – Greenland, I – Hindustan, Ib – Iberian massif, K – Kara microcontinent, KO– Kolymo-Omolonsky microcontinent, L – Lawrence, M – Madagascar, MT – Mongolian Terranes, NG – New Guinea, NZ – New Zealand, Pa – Patagonia, C – Siberian platform, SC – North China Platform, T– Ta- Roman block, Ts – Tasmania, SA – South America, South – South- Chinese platform.

Download (461KB)
Indexing metadata
3. Fig. 2. Early Cambrian mollusks from the middle part of the Bayangol formation of Western Mongolia, which were also found in limestone from Heraultia (Black Mountains, department of Herault, Occitanie region, France); scale ruler – 1 mm; designations: A. A. – Auricullina auriculata (Vassiljeva, 1990) (ex. PIN, No. 3302/1872); B. j. – Bemella jacutica (Missarzhevsky, 1966) (ex. PIN, No. 3302/1876); C. C. – Cambroscutum concameratum Kerber, 1988 (ex. PIN, No. 3302/1845); C. M. – “Calbyella” multicostata Missarzhevsky, 1995 (ex. PIN, No. 3302/1537); H. S. – Helcionella sp. (ex. PIN, No. 3302/1723); L. k. – Latouchella korobkovi (Vostokova, 1962) (ex. PIN, No. 3302/1755); M. t. – Merismoconcha tommotica (Zhegallo, 1996) (ex. PIN, No. 3302/2333); O. A. – Obtusoconus amplus (Zhegallo, 1982) (holotype PIN, No. 3302/1508); P. tr. – Prosinuites tripartitus Kerber, 1988 (ex. PIN, No. 3302/2081); P. o. – Protoconus orolgainicus (Zhegallo, 1996) (ex. PIN, No. 3302/1878); P. l. – Purella layracensis (Kerber, 1988) (

Download (1MB)
Indexing metadata

Copyright (c) 2024 Russian Academy of Sciences