Great Ordovician Biodiversification Event
E87794
The Great Ordovician Biodiversification Event was a profound evolutionary radiation during the Ordovician Period that saw a dramatic increase in marine biodiversity and the establishment of many major animal groups in Paleozoic oceans.
Statements (55)
| Predicate | Object |
|---|---|
| instanceOf |
Ordovician event
ⓘ
biodiversification event ⓘ evolutionary radiation ⓘ paleontological event ⓘ |
| affects |
brachiopods
ⓘ
bryozoans ⓘ conodonts ⓘ corals ⓘ echinoderms ⓘ graptolites ⓘ mollusks ⓘ ostracods ⓘ trilobites ⓘ |
| alsoKnownAs | GOBE ⓘ |
| associatedWith |
development of complex food webs
ⓘ
expansion of carbonate platforms ⓘ increase in alpha diversity ⓘ increase in beta diversity ⓘ increase in gamma diversity ⓘ increase in plankton diversity ⓘ |
| characterizedBy |
dramatic increase in marine biodiversity
ⓘ
expansion of ecological niches ⓘ increase in bioturbation ⓘ increase in ecological complexity ⓘ increase in predation pressure ⓘ increase in reef-building activity ⓘ increase in taxonomic richness ⓘ increase in tiering within seafloor communities ⓘ |
| endApproximateMa | 444 ⓘ |
| follows | Cambrian explosion ⓘ |
| hasDomain |
benthic communities
ⓘ
marine ecosystems ⓘ planktonic communities ⓘ |
| hasSignificance |
important benchmark for Phanerozoic biodiversity patterns
ⓘ
key event in the history of marine life ⓘ major step in the establishment of the Paleozoic marine fauna ⓘ |
| occursIn | Paleozoic Era ⓘ |
| partOf | Ordovician Period ⓘ |
| peakApproximateMa | 470 ⓘ |
| possibleDriver |
changes in ocean chemistry
ⓘ
climatic cooling from greenhouse to icehouse conditions ⓘ increased nutrient input to oceans ⓘ plate tectonics and continental reconfiguration ⓘ sea-level rise and expansion of shallow seas ⓘ |
| precedes | Late Ordovician mass extinction ⓘ |
| resultsIn |
differentiation of marine faunal provinces
ⓘ
establishment of many major animal groups in Paleozoic oceans ⓘ long-term rise in marine diversity above Cambrian levels ⓘ |
| startApproximateMa | 485 ⓘ |
| studiedIn |
paleobiology
ⓘ
paleoecology ⓘ stratigraphy ⓘ |
| temporalLocation |
Middle Ordovician
ⓘ
surface form:
Early Ordovician
Late Ordovician ⓘ Middle Ordovician ⓘ |
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.