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Hierarchy:Phanerozoic Paleozoic  Devonian   Early Devonian
Classification:Age (as per International Commission on Stratigraphy)
Top:393.3 ± 1.2 Ma
Base:407.6 ± 2.6 Ma
Preceeds:Middle Devonian Eifelian
GSSP:Zinzil'ban Gorge in the Kitab State Geological Reserve, Uzbekistan
GSSP location:39.2000°N, 67.3056°E
GSSP link:View Global Boundary Stratotype Section and Point of the International Commission on Stratigraphy
Fossil Record

Data via PaleoBioDB

Taxa Count Key
First appearance
First appearance and extinction
Related precursors
KingdomPhylumClassTaxa Count
AnimaliaAnnelida Polychaeta16
AnimaliaArthropoda Arachnida41
AnimaliaArthropoda Branchiopoda2
AnimaliaArthropoda Cephalocarida1
AnimaliaArthropoda Chilopoda4
AnimaliaArthropoda Malacostraca5
AnimaliaArthropoda Maxillopoda1
AnimaliaArthropoda Ostracoda163
AnimaliaArthropoda Pycnogonida4
AnimaliaArthropoda Trilobita242
AnimaliaBrachiopoda Chileata4
AnimaliaBrachiopoda Craniata9
AnimaliaBrachiopoda Lingulata32
AnimaliaBrachiopoda Rhynchonellata517
AnimaliaBrachiopoda Strophomenata160
AnimaliaBryozoa Gymnolaemata13
AnimaliaBryozoa Stenolaemata149
AnimaliaCnidaria Anthozoa346
AnimaliaCnidaria Cubozoa1
AnimaliaCnidaria Hydrozoa2
AnimaliaCnidaria Scyphozoa4
AnimaliaEchinodermata Asteroidea48
AnimaliaEchinodermata Crinoidea161
AnimaliaEchinodermata Echinoidea13
AnimaliaEchinodermata Holothuroidea34
AnimaliaEchinodermata Ophiuroidea46
AnimaliaHemichordata Pterobranchia1
AnimaliaMollusca Bivalvia207
AnimaliaMollusca Cephalopoda253
AnimaliaMollusca Gastropoda420
AnimaliaMollusca Monoplacophora1
AnimaliaMollusca Polyplacophora4
AnimaliaMollusca Scaphopoda5
AnimaliaPorifera Calcarea2
AnimaliaPorifera Hexactinellida22
BacteriaCyanobacteria Cyanophyceae9
ChromistaForaminifera Globothalamea5
ChromistaForaminifera Monothalamea12
ChromistaForaminifera Tubothalamea24
ChromistaMyzozoa Dinophyceae2
ChromistaRadiozoa Polycystina13
PlantaeChlorophyta Chlorophyceae3
PlantaeChlorophyta Ulvophyceae20
PlantaeRhodophyta Florideophyceae7
PlantaeRhodophyta Rhodophyceae1
PlantaeTracheophyta Lycopodiopsida1
PlantaeTracheophyta Magnoliopsida5
PlantaeTracheophyta Polypodiopsida1

Geologic Events

Event NameTypeAgeArea
Variscan/Hercynian orogeny (concludes)Orogeny~400 - ~280 MaEurope/North America
Caledonian orogeny (concludes)Orogeny~505 - ~400 MaEurope

Overview of geological time

List all geological events
Mineral and/or Locality  
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