Early–middle Cambrian stratigraphy and faunas from northern Siberia
New assemblages of skeletal fossils chemically extracted from carbonates of the Cambrian Stage 2–Drumian Stage are reported from the lower reaches of the Lena River as well as from the Khorbusuonka, Malaya Kuonamka, and Bol’shaya Kuonamka rivers in northern part of the Siberian Platform. The fauna s...
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Online Access: | https://doi.org/10.4202/app.00930.2021 https://doaj.org/article/c3c84d0274cf4823a36389575a113658 |
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ftdoajarticles:oai:doaj.org/article:c3c84d0274cf4823a36389575a113658 2023-05-15T17:07:40+02:00 Early–middle Cambrian stratigraphy and faunas from northern Siberia ARTEM KOUCHINSKY RUARIDH ALEXANDER STEFAN BENGTSON FRED BOWYER SÉBASTIEN CLAUSEN LARS E. HOLMER KIRILL A. KOLESNIKOV IGOR V. KOROVNIKOV VLADIMIR PAVLOV CHRISTIAN B. SKOVSTED GALINA USHATINSKAYA RACHEL WOOD ANDREY Y. ZHURAVLEV 2022-06-01T00:00:00Z https://doi.org/10.4202/app.00930.2021 https://doaj.org/article/c3c84d0274cf4823a36389575a113658 EN eng Institute of Paleobiology PAS https://doaj.org/toc/0567-7920 https://doaj.org/toc/1732-2421 doi:10.4202/app.00930.2021 0567-7920 1732-2421 https://doaj.org/article/c3c84d0274cf4823a36389575a113658 Acta Palaeontologica Polonica, Vol 67, Iss 2, Pp 341-464 (2022) small shelly fossils carbon isotopes stratigraphy cambrian siberia russia Fossil man. Human paleontology GN282-286.7 Paleontology QE701-760 article 2022 ftdoajarticles https://doi.org/10.4202/app.00930.2021 2022-12-30T22:56:38Z New assemblages of skeletal fossils chemically extracted from carbonates of the Cambrian Stage 2–Drumian Stage are reported from the lower reaches of the Lena River as well as from the Khorbusuonka, Malaya Kuonamka, and Bol’shaya Kuonamka rivers in northern part of the Siberian Platform. The fauna studied with scanning electron microscopy includes brachiopods, molluscs, hyoliths, halkieriids, chancelloriids, tommotiids, lobopodians, palaeoscolecidans, bradoriids, echinoderms, anabaritids, hyolithelminths, and sponges showing similarity to previously described fossil assemblages from Siberia, Laurentia, and Gondwana. The material includes emended descriptions of Halkieria proboscidea, Hadimopanella knappologica, Archaeopetasus typicus, and first descriptions of Hadimopanella foveata Kouchinsky sp. nov. and Archaeopetasus pachybasalis Kouchinsky sp. nov. Affinity of Archaeopetasus to chancelloriids is suggested. Finding of an in-place operculum in a planispiral shell of Michniakia minuta enables reinterpretation of this form as a hyolith, not a mollusc. The cambroclavids Cambroclavus sp. and Zhijinites clavus and the earliest echinoderms belonging to the Rhombifera and Ctenocystoidea are reported respectively from the lower Botoman stage and Botoman–Toyonian transitional beds, correlated with Cambrian Stage 4. Carbon isotopes are analysed from sections of the Chuskuna (upper Kessyusa Group), Erkeket, Kuonamka, Olenyok, Yunkyulyabit-Yuryakh, Tyuser and Sekten formations. A major part of the δ13C record is obtained from the Cambrian Stage 4–Drumian Stage strata which remain incompletely characterised by chemostratigraphy. The Lower Anomocarioides limbataeformis Carbon isotope Excursion (LACE) from the Drumian Stage of the Khorbusuonka River is introduced herein. New chemostratigraphic data are used for regional and global correlation and facilitate study of the evolutionary development of animals and faunas through the “Cambrian explosion”. Article in Journal/Newspaper lena river Siberia Directory of Open Access Journals: DOAJ Articles Olenyok ENVELOPE(112.449,112.449,68.505,68.505) Yuryakh ENVELOPE(145.658,145.658,59.865,59.865) Khorbusuonka ENVELOPE(123.869,123.869,71.803,71.803) Bol’shaya Kuonamka ENVELOPE(113.334,113.334,70.771,70.771) Malaya Kuonamka ENVELOPE(113.340,113.340,70.772,70.772) Acta Palaeontologica Polonica 67 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
small shelly fossils carbon isotopes stratigraphy cambrian siberia russia Fossil man. Human paleontology GN282-286.7 Paleontology QE701-760 |
spellingShingle |
small shelly fossils carbon isotopes stratigraphy cambrian siberia russia Fossil man. Human paleontology GN282-286.7 Paleontology QE701-760 ARTEM KOUCHINSKY RUARIDH ALEXANDER STEFAN BENGTSON FRED BOWYER SÉBASTIEN CLAUSEN LARS E. HOLMER KIRILL A. KOLESNIKOV IGOR V. KOROVNIKOV VLADIMIR PAVLOV CHRISTIAN B. SKOVSTED GALINA USHATINSKAYA RACHEL WOOD ANDREY Y. ZHURAVLEV Early–middle Cambrian stratigraphy and faunas from northern Siberia |
topic_facet |
small shelly fossils carbon isotopes stratigraphy cambrian siberia russia Fossil man. Human paleontology GN282-286.7 Paleontology QE701-760 |
description |
New assemblages of skeletal fossils chemically extracted from carbonates of the Cambrian Stage 2–Drumian Stage are reported from the lower reaches of the Lena River as well as from the Khorbusuonka, Malaya Kuonamka, and Bol’shaya Kuonamka rivers in northern part of the Siberian Platform. The fauna studied with scanning electron microscopy includes brachiopods, molluscs, hyoliths, halkieriids, chancelloriids, tommotiids, lobopodians, palaeoscolecidans, bradoriids, echinoderms, anabaritids, hyolithelminths, and sponges showing similarity to previously described fossil assemblages from Siberia, Laurentia, and Gondwana. The material includes emended descriptions of Halkieria proboscidea, Hadimopanella knappologica, Archaeopetasus typicus, and first descriptions of Hadimopanella foveata Kouchinsky sp. nov. and Archaeopetasus pachybasalis Kouchinsky sp. nov. Affinity of Archaeopetasus to chancelloriids is suggested. Finding of an in-place operculum in a planispiral shell of Michniakia minuta enables reinterpretation of this form as a hyolith, not a mollusc. The cambroclavids Cambroclavus sp. and Zhijinites clavus and the earliest echinoderms belonging to the Rhombifera and Ctenocystoidea are reported respectively from the lower Botoman stage and Botoman–Toyonian transitional beds, correlated with Cambrian Stage 4. Carbon isotopes are analysed from sections of the Chuskuna (upper Kessyusa Group), Erkeket, Kuonamka, Olenyok, Yunkyulyabit-Yuryakh, Tyuser and Sekten formations. A major part of the δ13C record is obtained from the Cambrian Stage 4–Drumian Stage strata which remain incompletely characterised by chemostratigraphy. The Lower Anomocarioides limbataeformis Carbon isotope Excursion (LACE) from the Drumian Stage of the Khorbusuonka River is introduced herein. New chemostratigraphic data are used for regional and global correlation and facilitate study of the evolutionary development of animals and faunas through the “Cambrian explosion”. |
format |
Article in Journal/Newspaper |
author |
ARTEM KOUCHINSKY RUARIDH ALEXANDER STEFAN BENGTSON FRED BOWYER SÉBASTIEN CLAUSEN LARS E. HOLMER KIRILL A. KOLESNIKOV IGOR V. KOROVNIKOV VLADIMIR PAVLOV CHRISTIAN B. SKOVSTED GALINA USHATINSKAYA RACHEL WOOD ANDREY Y. ZHURAVLEV |
author_facet |
ARTEM KOUCHINSKY RUARIDH ALEXANDER STEFAN BENGTSON FRED BOWYER SÉBASTIEN CLAUSEN LARS E. HOLMER KIRILL A. KOLESNIKOV IGOR V. KOROVNIKOV VLADIMIR PAVLOV CHRISTIAN B. SKOVSTED GALINA USHATINSKAYA RACHEL WOOD ANDREY Y. ZHURAVLEV |
author_sort |
ARTEM KOUCHINSKY |
title |
Early–middle Cambrian stratigraphy and faunas from northern Siberia |
title_short |
Early–middle Cambrian stratigraphy and faunas from northern Siberia |
title_full |
Early–middle Cambrian stratigraphy and faunas from northern Siberia |
title_fullStr |
Early–middle Cambrian stratigraphy and faunas from northern Siberia |
title_full_unstemmed |
Early–middle Cambrian stratigraphy and faunas from northern Siberia |
title_sort |
early–middle cambrian stratigraphy and faunas from northern siberia |
publisher |
Institute of Paleobiology PAS |
publishDate |
2022 |
url |
https://doi.org/10.4202/app.00930.2021 https://doaj.org/article/c3c84d0274cf4823a36389575a113658 |
long_lat |
ENVELOPE(112.449,112.449,68.505,68.505) ENVELOPE(145.658,145.658,59.865,59.865) ENVELOPE(123.869,123.869,71.803,71.803) ENVELOPE(113.334,113.334,70.771,70.771) ENVELOPE(113.340,113.340,70.772,70.772) |
geographic |
Olenyok Yuryakh Khorbusuonka Bol’shaya Kuonamka Malaya Kuonamka |
geographic_facet |
Olenyok Yuryakh Khorbusuonka Bol’shaya Kuonamka Malaya Kuonamka |
genre |
lena river Siberia |
genre_facet |
lena river Siberia |
op_source |
Acta Palaeontologica Polonica, Vol 67, Iss 2, Pp 341-464 (2022) |
op_relation |
https://doaj.org/toc/0567-7920 https://doaj.org/toc/1732-2421 doi:10.4202/app.00930.2021 0567-7920 1732-2421 https://doaj.org/article/c3c84d0274cf4823a36389575a113658 |
op_doi |
https://doi.org/10.4202/app.00930.2021 |
container_title |
Acta Palaeontologica Polonica |
container_volume |
67 |
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1766063151191687168 |