New genus Schvedovia (Schvedoviales, Schvedoviacea) from the Late Permian of Central Siberia

Cover Page

Cite item

Full Text

Open Access Open Access
Restricted Access Access granted
Restricted Access Subscription or Fee Access

Abstract

Yavorskyia radczenkovii Schvedov from the Permian volcanites of Central Siberia was previously considered a cicadophyte, but differs from other species of the genus (including the type species Yavorskyia mungatica) by inclined (vs. almost perpendicular to the rachis) position of catadromous leaf segments, and veins non-parallel to their lateral edges. The structures which are probably megasporangia (on anadromous segments) and microsporangia (on catadromous segments) have been found on such leaves from the Kochumdek-5 locality in the Lower Tunguska basin. A new genus Schvedovia has been distinguished, conditionally assigned to the heterosporous ferns.

Full Text

Restricted Access

About the authors

G. N. Sadovnikov

Russian State Geological Exploration University

Author for correspondence.
Email: sadovnikov.gennady@yandex.ru
Russian Federation, Miklukho-Maklaya Str., 23, Moscow, 117997

References

  1. Goman’kov A.V. 2006. O rasprostranenii kordaitov v verkhnepermskikh otlozheniyakh Vostochno-Yevropeyskoy platformy [About а distribution of Cordaitales in the Upper Permian deposits of the East-European platform]. – Toporkov’s proceedings. Rudny. 7(1): 389–401 (In Russ.).
  2. Goman’kov A.V., Meyen S.V. 1986. Tatarinovaya flora [Tatarina’s flora]. – Trudy Geolog. Institut AS SSSR. 401: 174 (In Russ.).
  3. Gorelova S.G., Radchenko G.P. 1962. Vazhneyshiye pozdnepermskiye rasteniya Altaye-Sayanskoy gornoy oblasi [The most important Late Permian plants of the Altai-Sayan mountain region]. – Trudy VSEGEI. 79: 252 (In Russ.).
  4. Kozur H.W., Weems R.E. 2010. The biostratigraphic importance of conchostracans in the continental Triassic of the northern hemisphere. – In: Triassic Timescale. Geol. Soc. L. Spec. Publ. 334: 315–417.
  5. Kozur H.W., Weems R.E. 2011. Detailed correlation and age of continental late Changhsingian and earliest Triassic beds: Implications for the role of the Siberian Trap in the Permian–Triassic biotic crisis. – Palaeogeogr. Palaeoclimatol. Palaeoecol. 308: 22–40.
  6. Malovetskaya I.M., Novojilov N.I., Sadovnikov G.N. 1976. Etapy razvitiya flory i presnovodnoy fauny Tungusskogo basseyna v pozdney permi i rannem triase [Stages of development of flora and freshwater fauna of the Tunguska basin in the Late Permian and Early Triassic]. – Trudy ХIII i ХIV sessiy Vsesoyuzn. Paleontol. Obshch. Leningrad. P. 296–300 (In Russ.).
  7. Mogucheva N.K. 1973. Rannetriasovaya flora Tungusskogo basseyna [Early Triassic flora of the Tunguska basin]. – Trudy SNIIGGiMS. 154. Moscow. 160 p. (In Russ.).
  8. Mezozoyskiye golosemennyye rasteniya SSSR [Mesozoic gymnospermous plants of USSR]. 1980. Moscow. 232 p. (In Russ.).
  9. Orlova E.F., Sadovnikov G.N. 2009. Microskulptura [Limnadiida, Falsiscida, Glyptasmussiida (Conchostraca)] terminalnoy permi Sibiri [Mesozoic gymnospermous plants of USSR]. – Paleontol. Journ. 6: 27–33 (In Russ.).
  10. Radchenko G.P. 1936. Nekotoryye rastitelnyye ostatki iz rayona Ostashkinykh Gor v Kuznetskom basseyne [Some plant remains from the Ostashkin Mountains area in the Kuznetsk Basin]. – Mater. po geol. Zapadno-Sibirskogo kraya. 35: 1–24 (In Russ.).
  11. Radchenko G.P., Shvedov N.A. 1940. Verkhnepaleozoyskaya flora uglenosnykh otlozheniy zapadnoy chasti basseyna r. Nizhney Tunguski [Upper Paleozoic flora of coal-bearing deposits of the western part of the basin of the Lower Tunguska]. – Trudy Arktich. Nauchno-issled. Inst. 157: 140 (In Russ.).
  12. Sadovnikov G.N. 1974. K istorii izucheniya stratigrafii tungusskogo kompleksa [On the history of studying the stratigraphy of the Tunguska complex]. – Trudy Tomsk. gos. univers. 232: 49–61 (In Russ.).
  13. Sadovnikov G.N. 1981. Korrelatsiya i vozrast vulkanogennykh obrazovaniy Tungusskogo basseyna, Severnogo Prianabar’ya i Taymyra [Correlation and age of volcanogenic formations of the Tunguska basin, the Northern Anabar region and the Taimyr]. – Ser. geol. 9: 49–63 (In Russ.).
  14. Sadovnikov G.N. 2012. Vozrast sibirskikh vulkanitov po ikh sootnosheniyu s tipom granitsy permi i triasa dlya nemorskikh otlozheniy [The age of Siberian volcanites according to their relationship with the type of Permian and Triassic boundary for non-marine deposits]. – Problemy regionalnoy geologii Severnoy Evrazii. Mater. VIII nauchn. chteniy in memory of Prof. M.V. Muratov. Moscow. P. 79–81 (In Russ.).
  15. Sadovnikov G.N. 2013a. Nemorskiye ekozony Paleozoya i Mezozoya severa i tsentra Evrazii [Non-marine Paleozoic and Mesozoic ecozones of the north and center of Eurasia]. – ХI Intern. Konf. “New ideas in Earth sciences”. Dokl. 1. Moscow. P. 87–89 (In Russ.).
  16. Sadovnikov G.N. 2013b. Ekozony nemorskikh otlozheniy Vishkil – Induan yarusov Sredney Sibiri [Ecozones of non-marine deposits of the Vishkil – Induan stages of Middle Siberia]. – Paleobot. Vremennik. Addition to journ. “Lethaea rossica”. 1: 70–73 (In Russ.).
  17. Sadovnikov G.N. 2013c. Nemorskiye ekozony karbona, permi, triasa i yury severa i tsentra Evrazii [Non-marine ecozones of Carboniferous, Permian, Triassic and Jurassic of the North and center of Eurasia]. – Izv. Vyssh. Ucheb. Zaved. Ser. Geol. Explor. 6: 91–94 (In Russ.).
  18. Sadovnikov G.N. 2014a. Vozrast sibirskikh vulkanitov po ikh sootnosheniyu s tipom granitsy permi i triasa dlya nemorskikh otlozheniy [The age of Siberian volcanites in their relation to the type of Permian and Triassic boundary for non-marine deposits]. – Izv. Vyssh. Ucheb. Zaved. Ser. Geol. Explor. 2: 75–78 (In Russ.).
  19. Sadovnikov G.N. 2014b. Ekozona Quadrocladus pachyphyllum... Prilukiella tomiensis vyatskogo yarusa verkhney permi [Ecozone Quadrocladus pachyphyllum ... Prilukiella tomiensis of the Vyatka Stage of Upper Perm]. – Izv. Vyssh. Ucheb. Zaved. Ser. Geol. Explor. 6: 6–13 (In Russ.).
  20. Sadovnikov G.N. 2016. Evolyutsia bioma trappovogo plato Sredney Sibiri [Evolution of the biome of the trap plateau of Middle Siberia]. – Paleontol. Journ. 5: 87–99 (In Russ.). https://doi.org/10.7868/S0031031X16050123
  21. Sadovnikov G.N. 2017. Ekozony i korrelyatsia pogranichnykh otlozheniy permi i triasa Vostochno-Evropeyskoy platformy i Sibiri [Ecozones and correlation of Permian and Triassic boundary sediments of the East European Platform and Siberia]. – IV Vseross. Konf. “Verkhniy paleozoy Rossii”, Kazan’, 19–23 September, 2017. Sbornik tezisov. Kazan’. P. 165–166 (In Russ.).
  22. Sadovnikov G.N. 2018a. Rol’ ekostratonov v postroyenii stratigraficheskikh shkal [The role of extratons in the construction of stratigraphic scales]. – Izv. Vyssh. Ucheb. Zaved. Ser. Geol. Explor. 1: 5–11 (In Russ.).
  23. Sadovnikov G.N. 2018b. Ekostratony paleozoya i mezozoya severa i tsentra Azii [Paleozoic and Mesozoic ecostratons of the North and Central Asia]. – Paleobot. Vremennik. Addition to journ. “Lethaea rossica”. 1: 50–56 (In Russ.).
  24. Sadovnikov G.N. 2018c. Rol’ L.M. Shorokhova v izuchenii geologii i paleobotaniki Sibiri [The role of L.M. Shorokhov in the study of geology and paleobotany of Siberia]. – Lethaea rossica. Rossiysk. Paleobotanich. Zhurn. 17: 122–130 (In Russ.).
  25. Slavnin D.P. 1974. Nauchnoye nasledie L.M. Shorokhova [Scientific heritage of L.M. Shorokhov]. – Trudy Tomsk. gos. univers. 232: 9–19 (In Russ.).
  26. Shvedov N.A. 1963. Novyye rannetriasovyye rasteniya iz Noril’skogo rayona [New Early Triassic plants from the Norilsk region]. – Collected articles of paleont. 32. Leningrad. P. 59–67 (In Russ.).

Supplementary files

Supplementary Files
Action
1. JATS XML
Download
2. Fig. 1. Fragment of Schvedovia radczenkovii frond, general view: a – base of an anabasal segment; receptacles (sporangia?) with several spores (?) are visible; b, c – middle parts of anabasal segments; oval receptacles (sporangia?) with several rounded spores (?) are visible.

Download (571KB)
Indexing metadata
3. Fig. 2. Fragments of fertile (?) anabasal segments of Schvedovia radczenkovii frond: a – fragment of the base of a fertile (?) anabasal segment; b, с – middle parts of anabasal segments; oval receptacles (sporangia?) with several rounded spores (?) are visible.

Download (768KB)
Indexing metadata

Copyright (c) 2024 Russian Academy of Sciences