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The Late Devonian mass extinction, also known as the Kellwasser event, was a mass extinction event which occurred around 372.15 million years ago, at the boundary between the Frasnian and Famennian ages of the Late Devonian period. It is placed as one of the "Big Five" most severe mass extinction events in Earth's history, with likely around 40% of…
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devonian event extinction kellwasser late also anoxia famennian marine plants extinctions period hangenberg mass years frasnian evidence boundary events global
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| oncolites | instance of | producing structures | 0.80 | text |
| stromatolites | instance of | producing structures | 0.80 | text |
| although there is evidence this shift in reef composition began prior to the Frasnian-Famennian boundary | instance of | producing structures | 0.80 | text |
| phosphates | instance of | This released previously untapped swathes of ions | 0.80 | text |
| which are nutrients for plants | instance of | This released previously untapped swathes of ions | 0.80 | text |
| algae.As rooted plants expanded into upland regions | instance of | This released previously untapped swathes of ions | 0.80 | text |
| the relatively sudden input of nutrients into river water may have caused eutrophication | instance of | This released previously untapped swathes of ions | 0.80 | text |
| harmful algal bloom | instance of | This released previously untapped swathes of ions | 0.80 | text |
| subsequent anoxia | instance of | This released previously untapped swathes of ions | 0.80 | text |
| Late Devonian mass extinction | related to External links | Late Devonian | 0.60 | section |
| Late Devonian mass extinction | related to External links | Archived | 0.60 | section |
| Late Devonian mass extinction | related to External links | Wayback Machine | 0.60 | section |
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