Lochkovian Epoch
E538404
The Lochkovian Epoch is the earliest subdivision of the Devonian Period, marking a time of significant diversification in early fish and terrestrial ecosystems.
Observed surface forms (1)
| Surface form | Occurrences |
|---|---|
| Lochkovian Stage | 2 |
Statements (43)
| Predicate | Object |
|---|---|
| instanceOf |
geologic epoch
ⓘ
stratigraphic unit ⓘ |
| chronostratigraphicEquivalent | Lochkovian Age NERFINISHED ⓘ |
| correspondsTo | Lower Devonian Series NERFINISHED ⓘ |
| end | 410.8 million years ago ⓘ |
| endUncertainty | ±2.8 million years ⓘ |
| environmentalContext |
generally warm global climate
ⓘ
high sea levels ⓘ |
| follows | Pridoli Epoch NERFINISHED ⓘ |
| fossilAssemblagesCharacteristic |
conodont faunas
ⓘ
early fish fossils ⓘ graptolite faunas ⓘ |
| geologicTimeScaleEon | Phanerozoic Eon NERFINISHED ⓘ |
| geologicTimeScaleEra | Paleozoic Era NERFINISHED ⓘ |
| ICSColorCode | Devonian standard color (greenish) ⓘ |
| lithostratigraphicCorrelation | Lochkov Formation in the Prague Basin NERFINISHED ⓘ |
| lowerBoundaryDefinedAt | Klonk Section NERFINISHED ⓘ |
| lowerBoundaryDefinedBy | first appearance datum of the graptolite Monograptus uniformis ⓘ |
| lowerBoundaryLocation | Klonk, near Suchomasty, Czech Republic NERFINISHED ⓘ |
| lowerBoundaryType | Global Boundary Stratotype Section and Point NERFINISHED ⓘ |
| majorBiologicalEvent |
development of early terrestrial ecosystems
ⓘ
diversification of early jawed fishes ⓘ diversification of early lobe-finned fishes ⓘ expansion of early terrestrial plant communities ⓘ radiation of early placoderms ⓘ |
| marineEcosystemFeature | diverse reef and shelf communities ⓘ |
| namedAfter | Lochkov NERFINISHED ⓘ |
| namedFor | Lochkov, Prague, Czech Republic NERFINISHED ⓘ |
| partOf |
Devonian Period
NERFINISHED
ⓘ
Early Devonian Epoch NERFINISHED ⓘ |
| plantEvolutionSignificance | spread of early vascular plants onto land ⓘ |
| positionInDevonian | earliest epoch of the Devonian ⓘ |
| precedes | Pragian Epoch NERFINISHED ⓘ |
| start | 419.2 million years ago ⓘ |
| startUncertainty | ±3.2 million years ⓘ |
| stratigraphicRank | epoch ⓘ |
| timeScale | International Commission on Stratigraphy NERFINISHED ⓘ |
| upperBoundaryDefinedBy |
first appearance datum of the conodont Eognathodus sulcatus
ⓘ
first appearance datum of the conodont Latericriodus steinachensis ⓘ |
| upperBoundaryType | Global Boundary Stratotype Section and Point NERFINISHED ⓘ |
| usedIn |
chronostratigraphy
ⓘ
geologic mapping ⓘ paleontological correlation ⓘ |
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Lochkovian Stage
Global Boundary Stratotype Section and Point at Klonk, Czech Republic
→
marksBaseOf
→
Lochkovian Epoch
ⓘ
this entity surface form:
Lochkovian Stage