Toarcian Oceanic Anoxic Event

Target entity: Toarcian Oceanic Anoxic Event
Context triple: [Early Jurassic, includesEvent, Toarcian Oceanic Anoxic Event]

• A. Permian–Triassic mass extinction
  The Permian–Triassic mass extinction was the most severe biodiversity crisis in Earth's history, wiping out the majority of marine and terrestrial species around 252 million years ago and marking the boundary between the Paleozoic and Mesozoic eras.
• B. Late Devonian extinction
  The Late Devonian extinction was a prolonged series of biodiversity crises around 375–359 million years ago that devastated marine life, especially reef ecosystems and armored fishes, and ranks among the largest mass extinctions in Earth’s history.
• C. Great Ordovician Biodiversification Event
  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.
• D. Cretaceous–Paleogene boundary
  The Cretaceous–Paleogene boundary marks the geological transition 66 million years ago associated with a mass extinction event that wiped out non-avian dinosaurs and many other species, likely triggered by a large asteroid impact.
• E. 8.2 kiloyear event
  The 8.2 kiloyear event was a sudden, short-lived global cooling episode during the early Holocene, likely triggered by massive meltwater outbursts disrupting North Atlantic ocean circulation.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: Toarcian Oceanic Anoxic Event
Target entity description: The Toarcian Oceanic Anoxic Event was a major Early Jurassic global environmental crisis marked by widespread marine oxygen depletion, significant carbon-cycle disruption, and associated mass extinctions.

• A. Permian–Triassic mass extinction
  The Permian–Triassic mass extinction was the most severe biodiversity crisis in Earth's history, wiping out the majority of marine and terrestrial species around 252 million years ago and marking the boundary between the Paleozoic and Mesozoic eras.
• B. Late Devonian extinction
  The Late Devonian extinction was a prolonged series of biodiversity crises around 375–359 million years ago that devastated marine life, especially reef ecosystems and armored fishes, and ranks among the largest mass extinctions in Earth’s history.
• C. Great Ordovician Biodiversification Event
  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.
• D. Cretaceous–Paleogene boundary
  The Cretaceous–Paleogene boundary marks the geological transition 66 million years ago associated with a mass extinction event that wiped out non-avian dinosaurs and many other species, likely triggered by a large asteroid impact.
• E. 8.2 kiloyear event
  The 8.2 kiloyear event was a sudden, short-lived global cooling episode during the early Holocene, likely triggered by massive meltwater outbursts disrupting North Atlantic ocean circulation.
• F. None of above. chosen