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Cited by 326

The DOI matches its Crossref record; 11 of the 11 references it cites were found in a registry or an index.

End Ordovician extinctions: A coincidence of causes

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Harper, David A.T., Hammarlund, Emma U., Rasmussen, Christian M.Ø.·2014·Gondwana Research
DOI 10.1016/j.gr.2012.12.021
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Abstract

The end Ordovician (Hirnantian) extinction was the first of the five big Phanerozoic extinction events, and the first that involved metazoan-based communities. It comprised two discrete pulses, both linked in different ways to an intense but short-lived glaciation at the South Pole. The first, occurring at, or just below, the Normalograptus extraordinarius graptolite Biozone, mainly affected nektonic and planktonic species together with those living on the shallow shelf and in deeper water whereas the second, within the N. persculptus graptolite Biozone, was less focused, eradicating faunas across a range of water depths. In all about 85% of marine species were removed. Proposed kill mechanisms for the first phase have included glacially-induced cooling, falling sea level and chemical recycling in the oceans, but a general consensus is lacking. The second phase is more clearly linked to near-global anoxia associated with a marked transgression during the Late Hirnantian. Most recently, however, new drivers for the extinctions have been proposed, including widespread euxinia together with habitat destruction caused by plate tectonic movements, suggesting that the end Ordovician mass extinctions were a product of the coincidence of a number of contributing factors. Moreover, when the deteriorating climate intensified, causing widespread glaciation, a tipping point was reached resulting in catastrophe.

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Metadata

Authors
Harper, D. A. T., Hammarlund, E. U., & Rasmussen, C. M. Ø.
Venue
Gondwana Research
Publisher
Elsevier BV
Published
2014-05
Volume
25
Issue
4
Pages
1294-1307
ISSN
1342-937X (ISSN-L)
DOI
10.1016/j.gr.2012.12.021
OpenAlex
W2091472881
Cited by
326
References
11
FWCI
10.26
Type
journal article
Language
en
Open access
green
Licence
www.elsevier.com/tdm/userlicense/1.0/ (tdm)
Funders
  • Carlsberg Foundation
  • Danish Council for Independent Research
  • Danish National Research Foundation

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Harper, D. A. T., Hammarlund, E. U., & Rasmussen, C. M. Ø. (2014). End Ordovician extinctions: A coincidence of causes. Gondwana Research. https://doi.org/10.1016/j.gr.2012.12.021

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