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Katian

Hierarchy:Phanerozoic Paleozoic  Ordovician   Late/Upper Ordovician
    Katian
Classification:Age (as per International Commission on Stratigraphy)
Top:445.2 ± 1.4 Ma
Base:453.0 ± 0.7 Ma
Preceeds:Hirnantian
Follows:Sandbian
GSSP:Black Knob Ridge Section, Atoka, Oklahoma (USA)
GSSP location:34.4305°N, 96.0746°W
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
Extinction
First appearance and extinction
Related precursors
KingdomPhylumClassTaxa Count
AnimaliaAnnelida Polychaeta28
AnimaliaArthropoda Branchiopoda2
AnimaliaArthropoda Cephalocarida1
AnimaliaArthropoda Malacostraca6
AnimaliaArthropoda Merostomata1
AnimaliaArthropoda Ostracoda228
AnimaliaArthropoda Trilobita1,060
AnimaliaBrachiopoda Chileata8
AnimaliaBrachiopoda Craniata28
AnimaliaBrachiopoda Lingulata173
AnimaliaBrachiopoda Obolellata2
AnimaliaBrachiopoda Rhynchonellata857
AnimaliaBrachiopoda Strophomenata691
AnimaliaBrachiopoda Tommotiida1 ✝
AnimaliaBryozoa Gymnolaemata10
AnimaliaBryozoa Stenolaemata433
AnimaliaChordata Holocephali2
AnimaliaCnidaria Anthozoa326
AnimaliaCnidaria Cubozoa1
AnimaliaCnidaria Hydrozoa2
AnimaliaCnidaria Scyphozoa10
AnimaliaCnidaria Staurozoa5
AnimaliaEchinodermata Asteroidea29
AnimaliaEchinodermata Crinoidea218
AnimaliaEchinodermata Echinoidea10
AnimaliaEchinodermata Holothuroidea14
AnimaliaEchinodermata Ophiuroidea12
AnimaliaHemichordata Pterobranchia22
AnimaliaMollusca Bivalvia441
AnimaliaMollusca Cephalopoda488
AnimaliaMollusca Gastropoda700
AnimaliaMollusca Monoplacophora1
AnimaliaMollusca Polyplacophora24
AnimaliaMollusca Scaphopoda4
AnimaliaPorifera Calcarea14
AnimaliaPorifera Demospongiae15
AnimaliaPorifera Hexactinellida67
BacteriaCyanobacteria Cyanophyceae8
ChromistaForaminifera Globothalamea3
ChromistaForaminifera Monothalamea5
ChromistaForaminifera Tubothalamea7
ChromistaMyzozoa Dinophyceae2
ChromistaRadiozoa Polycystina24
PlantaeChlorophyta Chlorophyceae3
PlantaeChlorophyta Ulvophyceae19
PlantaeRhodophyta Florideophyceae3
PlantaeRhodophyta Rhodophyceae1
PlantaeTracheophyta Magnoliopsida2
 

Geologic Events

Event NameTypeAgeArea
Ordovician–Silurian extinction events (concludes)Mass Extinction Event~455 - ~430 MaGlobal
Caledonian orogeny (concludes)Orogeny~505 - ~400 MaEurope


Overview of geological time

List all geological events
 
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