TY - JOUR

T1 - Evidences of the Oldest Trophic Interactions in the Riphean Biota (Lakhanda Lagerstätte, Southeastern Siberia)

AU - Shuvalova, J. V.

AU - Nagovitsin, K. E.

AU - Parkhaev, P. Yu

N1 - Funding Information: The research was supported by the Russian Foundation for Basic Research (project no. 17-54-12077). Publisher Copyright: © 2021, Pleiades Publishing, Ltd. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.

PY - 2021/1

Y1 - 2021/1

N2 - Evidences of perforation of organic-walled fossil eukaryotes by other organisms has been found in the Lakhanda Lagerstätte (1030–1000 Ma, southeastern Siberia). The type of perforation is most similar to the type described from the Akademikerbren (750 Ma, Spitsbergen), Chuar (780–740 Ma, United States) and Shaler Supergroups (1150–900 Ma, Arctic Canada). The biogenic origin of the perforations has been substantiated. A hypothesis of perforation of fossils by zoosporic fungi found in the same deposits has been proposed. At the same time, the taxonomic diversity of eukaryotic “prey” taxa and the primitive morphology of such perforations do not allow us to qualify the perforators as distinct protists and do not point out the absolute certainty of selective predation among eukaryotes during the Riphean (Mesoproterozoic). Thus, the hypothesis of explosive diversification of eukaryotes in the Late Proterozoic driven by selective predation cannot yet be confirmed paleontologically.

AB - Evidences of perforation of organic-walled fossil eukaryotes by other organisms has been found in the Lakhanda Lagerstätte (1030–1000 Ma, southeastern Siberia). The type of perforation is most similar to the type described from the Akademikerbren (750 Ma, Spitsbergen), Chuar (780–740 Ma, United States) and Shaler Supergroups (1150–900 Ma, Arctic Canada). The biogenic origin of the perforations has been substantiated. A hypothesis of perforation of fossils by zoosporic fungi found in the same deposits has been proposed. At the same time, the taxonomic diversity of eukaryotic “prey” taxa and the primitive morphology of such perforations do not allow us to qualify the perforators as distinct protists and do not point out the absolute certainty of selective predation among eukaryotes during the Riphean (Mesoproterozoic). Thus, the hypothesis of explosive diversification of eukaryotes in the Late Proterozoic driven by selective predation cannot yet be confirmed paleontologically.

KW - Lakhanda Lagerstätte

KW - perforation

KW - predation

KW - Proterozoic

KW - Riphean

UR - http://www.scopus.com/inward/record.url?scp=85101777601&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/fd17fc3c-1541-3852-a4a9-8594509c1f86/

U2 - 10.1134/S0012496621010105

DO - 10.1134/S0012496621010105

M3 - Article

C2 - 33635488

AN - SCOPUS:85101777601

VL - 496

SP - 34

EP - 40

JO - Doklady Biological Sciences

JF - Doklady Biological Sciences

SN - 0012-4966

IS - 1

ER -