| skos:altLabel | - explosion
- big five
- extinct
- cataclysm
- Extinction
- extinction
- extinctions
- extinguish
- meteor strike
- extinction event
- mass extinction
- mass extinctions
- The Big Five
- cataclysms
- 6th Great Extinction
- Extinction Level Event
- Extinction-Level Event
- Mass Extinction
- Mass extinction cycles
- Mass extinctions
- Timeline of extinctions
- biotic crises
- catastrophic comet impact
- cycle of mass extinctions
- extinction level events
- extinction period
- extinction-level event
- five previous mass extinction events
- largest mass extinctions
- major extinction event
- major extinction events
- major extinctions
- major mass extinctions
- mass extinction event
- mass extinction events
- mass extinction of species
- mass extinctions on Earth
- mass-extinctions
- massive extinction event
- past great extinctions
- severity rating
- threaten species with extinction
- threatens the survival of humanity
- threats to human existence
- van der Hammen cycles
- vast extinctions
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