Complex Tunnel Systems of Early Fortunian Macroscopic Endobenthos in the Ediacaran-Cambrian Transitional Strata of the Olenek Uplift (NE Siberian Platform) | Sciact - CRIS-система Института катализа

Complex Tunnel Systems of Early Fortunian Macroscopic Endobenthos in the Ediacaran-Cambrian Transitional Strata of the Olenek Uplift (NE Siberian Platform) Научная публикация

Журнал

Precambrian Research
ISSN: 0301-9268

Вых. Данные

Год: 2020, Том: 340, Номер статьи : 105627, Страниц : 15 DOI: 10.1016/j.precamres.2020.105627

Ключевые слова

Cambrian explosion; Evolutionary palaeoecology; Ichnoguilds; Ichnotaxonomy; Trace fossils

Авторы

Marusin Vasiliy V. ^1,2 , Kuper Konstantin E. ³

Организации

1	Department of Stratigraphy and Sedimentology, Trofimuk Institute of Petroleum Geology and Geophysics of SB RAS, prospect Akademika Koptyuga 3, Novosibirsk, 630090, Russia
2	Department of Geology and Geophysics, Novosibirsk State University, ulitsa Pirogova 1, Novosibirsk 630090, Russia
3	Budker Institute of Nuclear Physics of SB RAS, prospect Akademika Lavrentieva 11, Novosibirsk, 630090, Russia

A progressive colonisation of marine sediments by vagile benthos in the late Ediacaran and early Cambrian led to a series of dramatic transformations in marine ecosystems. Nevertheless the Fortunian ichnoassemblages reveal unprecedented development of behavioural strategies and architectural designs. As a result of the scarcity of vertical bioturbators, only the few uppermost centimetres of sediment were affected by infaunal mixing. Multifaceted study of the trace fossil Olenichnus irregularis from the type locality (early Fortunian strata of the Olenek Uplift, northeastern Siberian Platform), originally interpreted as subhorizontal network burrows, demonstrates that these burrows represent complex three-dimensional tunnel systems, produced by infaunal bilaterians. Together with helicoidal burrows Gyrolithes, the trace fossil Olenichnus comprises one of the earliest evidence of active vertical sediment reworking by bilaterians. Taphonomy of the topotype Olenichnus and its spatial position related to other associated ichnotaxa reveal that origin of endobenthic tiering and multi-stage colonisation of bottom substrates by macroscopic bilaterians appeared at the very beginning of the Cambrian Period. Olenichnus compose the oldest mid-tier ichnoguild, associated with oxygen-depleted sediments below the redox-discontinuity surface located closely to the sediment-water interface in the Fortunian. © 2020 Elsevier B.V.

Marusin V.V. , Kuper K.E.
Complex Tunnel Systems of Early Fortunian Macroscopic Endobenthos in the Ediacaran-Cambrian Transitional Strata of the Olenek Uplift (NE Siberian Platform)
Precambrian Research. 2020. V.340. 105627 :1-15. DOI: 10.1016/j.precamres.2020.105627 WOS Scopus РИНЦ CAPlus OpenAlex

Поступила в редакцию:	29 окт. 2019 г.
Принята к публикации:	20 янв. 2020 г.
Опубликована online:	23 янв. 2020 г.
Опубликована в печати:	1 мая 2020 г.

Web of science:	WOS:000521507700003
Scopus:	2-s2.0-85079037573
РИНЦ:	43244765
Chemical Abstracts:	2020:273263
OpenAlex:	W3002623926

БД	Цитирований
Web of science	11
Scopus	12
OpenAlex	12