On the occurrence of rare nannoliths (calcareous nannofossils) in the Early Jurassic and their implications for the end-Triassic mass extinction

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Standard

On the occurrence of rare nannoliths (calcareous nannofossils) in the Early Jurassic and their implications for the end-Triassic mass extinction. / Paulsen, Maria; Thibault, Nicolas.

I: Papers in Palaeontology, Bind 9, Nr. 2, e1489, 2023.

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt

Harvard

Paulsen, M & Thibault, N 2023, 'On the occurrence of rare nannoliths (calcareous nannofossils) in the Early Jurassic and their implications for the end-Triassic mass extinction', Papers in Palaeontology, bind 9, nr. 2, e1489. https://doi.org/10.1002/spp2.1489

APA

Paulsen, M., & Thibault, N. (2023). On the occurrence of rare nannoliths (calcareous nannofossils) in the Early Jurassic and their implications for the end-Triassic mass extinction. Papers in Palaeontology, 9(2), [e1489]. https://doi.org/10.1002/spp2.1489

Vancouver

Paulsen M, Thibault N. On the occurrence of rare nannoliths (calcareous nannofossils) in the Early Jurassic and their implications for the end-Triassic mass extinction. Papers in Palaeontology. 2023;9(2). e1489. https://doi.org/10.1002/spp2.1489

Author

Paulsen, Maria ; Thibault, Nicolas. / On the occurrence of rare nannoliths (calcareous nannofossils) in the Early Jurassic and their implications for the end-Triassic mass extinction. I: Papers in Palaeontology. 2023 ; Bind 9, Nr. 2.

Bibtex

@article{8321ed2fa5194ae0842f318a9879dec1,
title = "On the occurrence of rare nannoliths (calcareous nannofossils) in the Early Jurassic and their implications for the end-Triassic mass extinction",
abstract = "A peculiar record of previously undescribed and/or rarely described nannoliths from the Hettangian to lower Pliensbachian of the Llanbdr (Mochras Farm) core, Wales (UK) is documented here. Some of the observed morphotypes are assigned to didemnid ascidians, commonly observed in the upper Rhaetian, as evidence of the resilience of ascidian tunicates during the end-Triassic mass extinction. One newly described nannolith present throughout the Hettangian and Sinemurian, Quadrifolium hesselboi, is similar to forms previously observed in the upper Rhaetian, and is therefore considered to be a new nannofossil survivor from the end-Triassic mass extinction. High-amplitude changes observed in the absolute and relative abundances of nannoliths, schizosphaerellids and coccoliths across the Hettangian suggest a recovery interval from the end-Triassic crisis spanning the planorbis–liasicus ammonite zones in four distinct steps with high volatility in environmental conditions, followed by the establishment of more stable environmental conditions in the angulata ammonite zone.",
keywords = "calcareous nannofossil, Early Jurassic, end-Triassic mass extinction, Mochras core",
author = "Maria Paulsen and Nicolas Thibault",
note = "Publisher Copyright: {\textcopyright} 2023 The Authors. Papers in Palaeontology published by John Wiley & Sons Ltd on behalf of The Palaeontological Association.",
year = "2023",
doi = "10.1002/spp2.1489",
language = "English",
volume = "9",
journal = "Papers in Palaeontology",
issn = "2056-2802",
publisher = "Wiley-Blackwell",
number = "2",

}

RIS

TY - JOUR

T1 - On the occurrence of rare nannoliths (calcareous nannofossils) in the Early Jurassic and their implications for the end-Triassic mass extinction

AU - Paulsen, Maria

AU - Thibault, Nicolas

N1 - Publisher Copyright: © 2023 The Authors. Papers in Palaeontology published by John Wiley & Sons Ltd on behalf of The Palaeontological Association.

PY - 2023

Y1 - 2023

N2 - A peculiar record of previously undescribed and/or rarely described nannoliths from the Hettangian to lower Pliensbachian of the Llanbdr (Mochras Farm) core, Wales (UK) is documented here. Some of the observed morphotypes are assigned to didemnid ascidians, commonly observed in the upper Rhaetian, as evidence of the resilience of ascidian tunicates during the end-Triassic mass extinction. One newly described nannolith present throughout the Hettangian and Sinemurian, Quadrifolium hesselboi, is similar to forms previously observed in the upper Rhaetian, and is therefore considered to be a new nannofossil survivor from the end-Triassic mass extinction. High-amplitude changes observed in the absolute and relative abundances of nannoliths, schizosphaerellids and coccoliths across the Hettangian suggest a recovery interval from the end-Triassic crisis spanning the planorbis–liasicus ammonite zones in four distinct steps with high volatility in environmental conditions, followed by the establishment of more stable environmental conditions in the angulata ammonite zone.

AB - A peculiar record of previously undescribed and/or rarely described nannoliths from the Hettangian to lower Pliensbachian of the Llanbdr (Mochras Farm) core, Wales (UK) is documented here. Some of the observed morphotypes are assigned to didemnid ascidians, commonly observed in the upper Rhaetian, as evidence of the resilience of ascidian tunicates during the end-Triassic mass extinction. One newly described nannolith present throughout the Hettangian and Sinemurian, Quadrifolium hesselboi, is similar to forms previously observed in the upper Rhaetian, and is therefore considered to be a new nannofossil survivor from the end-Triassic mass extinction. High-amplitude changes observed in the absolute and relative abundances of nannoliths, schizosphaerellids and coccoliths across the Hettangian suggest a recovery interval from the end-Triassic crisis spanning the planorbis–liasicus ammonite zones in four distinct steps with high volatility in environmental conditions, followed by the establishment of more stable environmental conditions in the angulata ammonite zone.

KW - calcareous nannofossil

KW - Early Jurassic

KW - end-Triassic mass extinction

KW - Mochras core

U2 - 10.1002/spp2.1489

DO - 10.1002/spp2.1489

M3 - Journal article

AN - SCOPUS:85153760457

VL - 9

JO - Papers in Palaeontology

JF - Papers in Palaeontology

SN - 2056-2802

IS - 2

M1 - e1489

ER -

ID: 346597477