Late Devonian
E395017
The Late Devonian was the final epoch of the Devonian Period, marked by extensive reef collapse, major evolutionary changes in fish and early land plants, and several significant mass extinction events.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Late Devonian canonical | 8 |
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf | geologic epoch ⓘ |
| biostratigraphicMarkers | conodont zonation used for age subdivision ⓘ |
| characterizedBy |
cooling climatic trends
ⓘ
extensive reef collapse ⓘ global environmental instability ⓘ major evolutionary changes in early land plants ⓘ major evolutionary changes in fishes ⓘ sea-level fluctuations ⓘ widespread anoxia in marine basins ⓘ |
| climate | generally warm greenhouse conditions with later cooling trend ⓘ |
| contains |
Famennian stage
ⓘ
surface form:
Famennian Age
Frasnian Age ⓘ |
| dominantMarineVertebrates | placoderm fishes ⓘ |
| endTime | approximately 358.9 million years ago ⓘ |
| follows | Middle Devonian ⓘ |
| geochemicalSignals |
black shale deposition
ⓘ
positive carbon isotope excursions ⓘ |
| hasMajorEvent |
Late Devonian extinction
ⓘ
surface form:
Frasnian–Famennian extinction event
Late Devonian extinction ⓘ
surface form:
Hangenberg event
Kellwasser events ⓘ
surface form:
Kellwasser event
Late Devonian extinction ⓘ
surface form:
Late Devonian mass extinction
|
| invertebrateFauna |
decline of many trilobite groups
ⓘ
extinctions among ammonoids ⓘ extinctions among brachiopods ⓘ extinctions among conodonts ⓘ |
| marineVertebrateEvolution |
decline of many jawless fishes
ⓘ
diversification of early ray-finned fishes ⓘ diversification of lobe-finned fishes ⓘ |
| massExtinctionSeverity | one of the five largest Phanerozoic mass extinctions ⓘ |
| paleogeography |
Laurussia located near the equator
ⓘ
continents largely clustered near the equator ⓘ presence of the supercontinent Gondwana ⓘ |
| partOf | Devonian Period ⓘ |
| plantEvolution |
development of more complex root systems
ⓘ
expansion of vascular land plants ⓘ increased soil formation on land ⓘ spread of seed plants (progymnosperms and early spermatophytes) ⓘ |
| possibleExtinctionDrivers |
global cooling
ⓘ
oceanic anoxia ⓘ sea-level change ⓘ terrestrial plant expansion affecting weathering and nutrients ⓘ |
| precedes |
Carboniferous period
ⓘ
surface form:
Carboniferous Period
Mississippian Series ⓘ
surface form:
Mississippian Subperiod
|
| reefCommunities |
collapse of stromatoporoid reefs
ⓘ
decline of tabulate corals ⓘ |
| startTime | approximately 382.7 million years ago ⓘ |
| tetrapodEvolution |
appearance of early tetrapods
ⓘ
transition of vertebrates from water to land ⓘ |
| timeScale | International Commission on Stratigraphy ⓘ |
Referenced by (8)
Full triples — surface form annotated when it differs from this entity's canonical label.