radiations and extinctions during the devonian plant ...€¦ · year collaborative project, will...
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# Event %1 Event %2 Event %3 Severity ranking4
1 End Permian −58 End Permian −57 End Permian −83 End Permian2 End Ordovician −49 End Ordovician −43 End Triassic −73 End Cretaceous3 Capitanian −47 Capitanian −36 End Ordovician −52 End Triassic4 End Triassic −40 End Cretaceous −34 End Devonian −50 Frasnian-
Famennian
5 End Cretaceous −39 End Triassic −33 End Cret., Fras-Fam.
−40 Capitanian
6 Frasnian-Famennian
−35 Frasnian-Famennian
−22 N.A. NA Serpukhov.
7 Givetian −30 Serpukhovian −13 Serpukhovian −39 End Dev., End Ordovician
8 End Devonian −28 Givetian −10 Givetian −36 NA9 Eifelian −24 End Dev., Ludford. −7 Eifelian −32 Givetian10 Serpuk.,
Ludford.−23 N.A. NA Capitanian −25 Eifelian, Ludford.
11 N.A. NA Eifelian −6 Ludfordian −9 NA
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Plants constitute just 5% of records in the Paleobiology Database and Devonian plants are a tiny proportion of these
We analysed 1314 individual plant records in 294 genera from 389 publications using Excel
Presence/absence matrix created within stratigraphic bins (stages divided into three equal sub-stages, Early, Middle, Late)
Presence/absence matrix in Excel Comparison of new database with previous collations (replotted)
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Zosterophylls& rhyniophytes:important early
Later replacedby lycopsids
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