KFU. Card publication. Radiolarians, Conodonts, and Palynomorphs from the Sakmarian–Artinskian Boundary Beds (Lower Permian) in the Dal'ny Tulkas Section, South Urals, Russia

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RADIOLARIANS, CONODONTS, AND PALYNOMORPHS FROM THE SAKMARIAN&NDASH;ARTINSKIAN BOUNDARY BEDS (LOWER PERMIAN) IN THE DAL'NY TULKAS SECTION, SOUTH URALS, RUSSIA

Form of presentation

Articles in Russian journals and collections

Year of publication

2022

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Authors, employees of KFU

Sungatullin Rafael Kharisovich, author

Sungatullina Guzal Marsovna, author

Other authors

Afanaseva Marina Spartakovna, author

Zbukova Darya Vladimirovna, author

Chernykh Valeriy Vladimirovich, author

Bibliographic description in the original language

Afanasieva M.S., Chernykh V.V., Sungatullina G.M., Sungatullin R.Kh., Zbukova L.V. Radiolarians, Conodonts, and Palynomorphs from the Sakmarian–Artinskian Boundary Beds (Lower Permian) in the Dal'ny Tulkas Section, South Urals, Russia // Paleontological Journal. 2022. Vol. 56, no. 9. pp. 975–1025. DOI: 10.1134/S0031030122090027

Annotation

The Dal'ny Tulkas section is located in the South Urals in the vicinity of the village of Krasnousolsky and is described in two complementary outcrops: in the main section and in the trench section. This study presents results of a comprehensive study of conodonts and radiolarians from the Sakmarian–Artinskian boundary beds. The base of the Artinskian is defined in the main section by the first occurrence datum of the conodont Sweetognathus asymmetricus in the phylogenetic lineage Sw. expansus → Sw. aff. merrilli → Sw. binodosus → Sw. anceps → Sw. asymmetricus → Sw. clarki. The Sakmarian–Artinskian boundary beds of the trench section yielded numerous well-preserved radiolarians, represented by 32 species. At the level of the Sakmarian–Artinskian boundary, the taxonomic composition of the radiolarian assemblages was changed: (1) the total number of identified species of radiolarians has decreased; (2) the absolute and relative number of representatives of the class Sphaerellaria decreased; (3) the importance of representatives of the class Stauraxonaria. In the Artinskian, the proportion of the class Spumellaria in the assemblages increased, and the bilaterally symmetrical species Pseudoalbaillella scalprata from the order Albaillellaria (class Aculearia) appeared. Changes in the taxonomic composition of radiolarians make it possible to establish two successive ecozones: Upper Sakmarian Tetragregnon vimineum and Lower Artinskian Pseudoalbaillella scalprata. The characteristics of ecozones reflect the quantitative ratio of taxa of higher rank (classes). The palynomorphs in the trench section are represented by a single palynoassemblage characterizing the Sakmarian and Artinskian stages. This palynoassemblage is characterized by the quantitative predominance of pollen over spores and by the dominance of acritarchs.

Keywords

radiolarians, conodonts, palynomorphs, evolution, morphology, zones, ecozones, Sakmarian, Artinskian, Dal?ny Tulkas main section and trench section, South Urals, Russia

The name of the journal

Paleontological journal

URL

https://www.pleiades.online/ru/journal/paleng/

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=274241&p_lang=2

Full metadata record

Field DC	Value	Language
dc.contributor.author	Sungatullin Rafael Kharisovich	ru_RU
dc.contributor.author	Sungatullina Guzal Marsovna	ru_RU
dc.contributor.author	Afanaseva Marina Spartakovna	ru_RU
dc.contributor.author	Zbukova Darya Vladimirovna	ru_RU
dc.contributor.author	Chernykh Valeriy Vladimirovich	ru_RU
dc.date.accessioned	2022-01-01T00:00:00Z	ru_RU
dc.date.available	2022-01-01T00:00:00Z	ru_RU
dc.date.issued	2022	ru_RU
dc.identifier.citation	Afanasieva M.S., Chernykh V.V., Sungatullina G.M., Sungatullin R.Kh., Zbukova L.V. Radiolarians, Conodonts, and Palynomorphs from the Sakmarian–Artinskian Boundary Beds (Lower Permian) in the Dal'ny Tulkas Section, South Urals, Russia // Paleontological Journal. 2022. Vol. 56, no. 9. pp. 975–1025. DOI: 10.1134/S0031030122090027	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=274241&p_lang=2	ru_RU
dc.description.abstract	Paleontological journal	ru_RU
dc.description.abstract	The Dal'ny Tulkas section is located in the South Urals in the vicinity of the village of Krasnousolsky and is described in two complementary outcrops: in the main section and in the trench section. This study presents results of a comprehensive study of conodonts and radiolarians from the Sakmarian–Artinskian boundary beds. The base of the Artinskian is defined in the main section by the first occurrence datum of the conodont Sweetognathus asymmetricus in the phylogenetic lineage Sw. expansus → Sw. aff. merrilli → Sw. binodosus → Sw. anceps → Sw. asymmetricus → Sw. clarki. The Sakmarian–Artinskian boundary beds of the trench section yielded numerous well-preserved radiolarians, represented by 32 species. At the level of the Sakmarian–Artinskian boundary, the taxonomic composition of the radiolarian assemblages was changed: (1) the total number of identified species of radiolarians has decreased; (2) the absolute and relative number of representatives of the class Sphaerellaria decreased; (3) the importance of representatives of the class Stauraxonaria. In the Artinskian, the proportion of the class Spumellaria in the assemblages increased, and the bilaterally symmetrical species Pseudoalbaillella scalprata from the order Albaillellaria (class Aculearia) appeared. Changes in the taxonomic composition of radiolarians make it possible to establish two successive ecozones: Upper Sakmarian Tetragregnon vimineum and Lower Artinskian Pseudoalbaillella scalprata. The characteristics of ecozones reflect the quantitative ratio of taxa of higher rank (classes). The palynomorphs in the trench section are represented by a single palynoassemblage characterizing the Sakmarian and Artinskian stages. This palynoassemblage is characterized by the quantitative predominance of pollen over spores and by the dominance of acritarchs.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	radiolarians	ru_RU
dc.subject	conodonts	ru_RU
dc.subject	palynomorphs	ru_RU
dc.subject	evolution	ru_RU
dc.subject	morphology	ru_RU
dc.subject	zones	ru_RU
dc.subject	ecozones	ru_RU
dc.subject	Sakmarian	ru_RU
dc.subject	Artinskian	ru_RU
dc.subject	Dal?ny Tulkas main section and trench section	ru_RU
dc.subject	South Urals	ru_RU
dc.subject	Russia	ru_RU
dc.title	Radiolarians, Conodonts, and Palynomorphs from the Sakmarian–Artinskian Boundary Beds (Lower Permian) in the Dal'ny Tulkas Section, South Urals, Russia	ru_RU
dc.type	Articles in Russian journals and collections	ru_RU