TY - JOUR

T1 - Early Paleozoic Plankton Evolution in the Paleo-Asian Ocean: Insights from New and Reviewed Fossil Records from the Gorny Altai, West Siberia

AU - Obut, Olga T.

N1 - Funding Information: The author thanks Yukio Isozaki (Tokyo, Japan) and the Palaeontological Society of Japan for inviting her to present a talk at the Annual Meeting of the Society in 2020. The author is grateful to Taniel Danelian (Lille, France) and an anonymous reviewer for their comments that help to improve the manuscript, to Yukio Isozaki for valuable discussions about Paleo-Asian ocean topics. This study was supported by the Russian Science Foundation (project # 20-77-10051). This is a contribution to IGCP 653 project "The Onset of the Great Ordovician Biodiversification Event" and IGCP 735 project "Filling Knowledge Gaps in the Early Paleozoic Biodiversification". Publisher Copyright: © by the Palaeontological Society of Japan.

PY - 2022/10/1

Y1 - 2022/10/1

N2 - The mountainous Gorny Altai in southern Siberia constitutes the western part of the Altai-Sayan Folded Belt in the northwestern part of the Central Asian orogenic belt, which contains precious records of the lost major Proterozoic-Paleozoic ocean called the Paleo-Asian Ocean (PAO). This paper briefly introduces the latest microfossil (radiolarian and conodont) information recovered from the Lower Paleozoic siliceous and carbonate sequences of the Gorny Altai. The fossils of planktonic biota inhabited in PAO range back to the early Cambrian, in which the world's oldest radiolarians are included. In addition, numerous well-preserved conodonts as well as graptolites were recovered from Cambrian, Ordovician, and Silurian strata in the Gorny Altai. These recorded the Early Paleozoic biodiversity and their secular change both in pelagic and continental margin settings within PAO.

AB - The mountainous Gorny Altai in southern Siberia constitutes the western part of the Altai-Sayan Folded Belt in the northwestern part of the Central Asian orogenic belt, which contains precious records of the lost major Proterozoic-Paleozoic ocean called the Paleo-Asian Ocean (PAO). This paper briefly introduces the latest microfossil (radiolarian and conodont) information recovered from the Lower Paleozoic siliceous and carbonate sequences of the Gorny Altai. The fossils of planktonic biota inhabited in PAO range back to the early Cambrian, in which the world's oldest radiolarians are included. In addition, numerous well-preserved conodonts as well as graptolites were recovered from Cambrian, Ordovician, and Silurian strata in the Gorny Altai. These recorded the Early Paleozoic biodiversity and their secular change both in pelagic and continental margin settings within PAO.

KW - conodonts

KW - Early Paleozoic

KW - Paleo-Asian Ocean

KW - radiolarians

UR - http://www.scopus.com/inward/record.url?scp=85141841803&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/dc93e201-cc1d-3164-8376-f1802e980144/

U2 - 10.2517/PR210035

DO - 10.2517/PR210035

M3 - Article

AN - SCOPUS:85141841803

VL - 27

SP - 3

EP - 13

JO - Paleontological Research

JF - Paleontological Research

SN - 1342-8144

IS - 1

ER -