Journal ArticleDOI
Completeness of the Hirnantian brachiopod record: Spatial heterogeneity through the end Ordovician extinction event
David A. T. Harper,Rong Jia-Yu +1 more
TLDR
Two main extinc-tion phases have been recognized in the brachiopod fauna as mentioned in this paper : one at the base of the terminal Ordovician stage (base of the Brachiopoda stage) and another at the end of the branching stage.Abstract:
The end Ordovician event was one of the five major mass extinc-tions (Raup & Sepkoski 1982; Sheehan 2001). Two main extinc-tion phases have been recognized in the brachiopod fauna (Rong& Harper 1988, 1999; Harper & Rong 1995, 2001): one at thebase of the terminal Ordovician Stage (base of theread more
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Journal ArticleDOI
End Ordovician extinctions: A coincidence of causes
TL;DR: The end Ordovician (Hirnantian) extinction was the first of the five big Phanerozoic extinction events, and the first that involved metazoan-based communities as mentioned in this paper.
Journal ArticleDOI
The end-Ordovician glaciation and the Hirnantian Stage: A global review and questions about Late Ordovician event stratigraphy
A. Delabroye,Marco Vecoli +1 more
TL;DR: The Hirnantian GSSP in south China is tentatively correlated with latest Ordovician strata from the peri-Gondwanan “glacial” regions as discussed by the authors.
Journal ArticleDOI
Did changes in atmospheric CO2 coincide with latest Ordovician glacial-interglacial cycles?
TL;DR: In this article, the authors show that consistent trends in both δ 13 Ccarb and δ13 Corg from two well-dated stratigraphic sequences in Estonia and Anticosti Island, Canada coincide with changes in Late Ordovician (Hirnantian) climate as inferred from sea level and the extent of ice sheets.
Journal ArticleDOI
Environmental controls on marine ecosystem recovery following mass extinctions, with an example from the Early Triassic
Hengye Wei,Jun Shen,Jun Shen,Shane D. Schoepfer,L. Krystyn,Sylvain Richoz,Thomas J. Algeo,Thomas J. Algeo +7 more
TL;DR: In this paper, the authors examined changes in marine conditions following the end-Permian mass extinction with the objective of evaluating the role of environmental factors in the protracted (~ 5-Myr-long) recovery of marine ecosystems during the Early Triassic.
Journal ArticleDOI
Did the amalgamation of continents drive the end Ordovician mass extinctions
TL;DR: This paper showed that plate tectonic configurations during the Ordovician-Silurian interval may have exerted a primary control on biotic extinction and recovery, in particular the proximity and ultimate loss of microcontinents and associated smaller terranes around Laurentia, which provided migration routes to help drive a diachronous early Silurian recovery.
References
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Journal Article
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TL;DR: PAST (PAleontological STatistics) as discussed by the authors is a simple-to-use software package for executing a range of standard numerical analysis and operations used in quantitative paleontology.
Journal ArticleDOI
Mass Extinctions in the Marine Fossil Record
David M. Raup,J. John Sepkoski +1 more
TL;DR: A new compilation of fossil data on invertebrate and vertebrate families indicates that four mass extinctions in the marine realm are statistically distinct from background extinction levels.
Journal ArticleDOI
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Journal ArticleDOI
The Late Ordovician Mass Extinction
TL;DR: In the Late Ordovician, about 85% of marine species died due to a brief glacial interval that produced two pulses of extinction as discussed by the authors, the first was at the beginning of the glaciation, when sea level decline drained epicontinental seaways, produced a harsh climate in low and mid-latitudes, and initiated active, deep-oceanic currents that aerated the deep oceans and brought nutrients and possibly toxic material up from oceanic depths.
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A global synthesis of the latest Ordovician Hirnantian brachiopod faunas
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