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

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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.

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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

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1. JATS XML
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.

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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.

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