Hangenberg event
Hangenberg event
Mass extinction at the end of the Devonian.
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Readers' pathsAug 2026 – Oct 2026
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Late Devonian mass extinction
Second of the big five mass extinctions.
23%
Anoxic event
Historic oxygen depletion events in Earth's oceans.
9.5%
Extinction event
Rapid decrease in Earth's biodiversity.
9.3%
Carboniferous
Fifth period of the Paleozoic Era.
6.6%
Woodleigh impact structure
Impact structure in Western Australia.
5%
Ammonoidea
Extinct subclass of cephalopod molluscs.
4.8%
Stromatoporoidea
Extinct clade of reef-building sponges.
4.7%
Rhenish Massif
Mountain range in Europe.
3.7%
Devonian
Fourth period of the Paleozoic Era.
3.3%
Brachiopod
Phylum of marine animals also known as lamp shells.
3.2%
Readers come from
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Devonian
Fourth period of the Paleozoic Era.
26%
Late Devonian mass extinction
Second of the big five mass extinctions.
22%
Extinction event
Rapid decrease in Earth's biodiversity.
14%
Trilobite
Class of extinct, Paleozoic arthropods.
7.4%
Placoderm
Extinct paraphyletic class of fishes.
6.7%
Famennian
Final stage of the Devonian.
4%
Ammonoidea
Extinct subclass of cephalopod molluscs.
3.6%
Near-Earth supernova
Supernova close enough to affect Earth's biosphere.
3%
Fish
Gill-bearing non-tetrapod aquatic vertebrates.
1.7%
Early Devonian
First epoch/series of the Devonian.
1.1%