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the claim

An asteroid impact about 66 million years ago caused the extinction of the non-avian dinosaurs.

the verdict
SUPPORTED
the evidence backs this
Recorded sources
5 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that an asteroid impact about 66 million years ago caused the extinction of the non-avian dinosaurs?

Yes. Multiple peer-reviewed and museum sources state that the Chicxulub asteroid impact about 66 million years ago triggered the end-Cretaceous mass extinction that eliminated the non-avian dinosaurs. Two further peer-reviewed papers treat an asteroid-caused sudden extinction as the most accepted hypothesis, though they note debate about prior decline.

Verdict: SUPPORTED · 5 sources for, 0 against · Last checked

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

Evidence for · 5
The extinction of the dinosaurs
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The extinction of the dinosaurs. (n.d.). cir.nii.ac.jp. https://doi.org/10.1111/brv.12128

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More for · 4
How an asteroid ended the age of the dinosaurs | Natural History Museum
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How an asteroid ended the age of the dinosaurs | Natural History Museum. (n.d.). nhm.ac.uk. https://www.nhm.ac.uk/discover/how-an-asteroid-caused-extinction-of-dinosaurs.html

The last dinosaurs of Brazil: The Bauru Group and its implications for the end-Cretaceous mass extinction
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BRUSATTE, S. L., CANDEIRO, C. R., & SIMBRAS, F. M. (n.d.). The last dinosaurs of Brazil: The Bauru Group and its implications for the end-Cretaceous mass extinction. doi.org. https://doi.org/10.1590/0001-3765201720160918

Dinosaur biodiversity declined well before the asteroid impact, influenced by ecological and environmental pressures
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Dinosaur biodiversity declined well before the asteroid impact, influenced by ecological and environmental pressures. (n.d.). cir.nii.ac.jp. https://doi.org/10.1038/s41467-021-23754-0

2 recorded entries grouped as this source

Additional records of the same source are shown below. They are not counted as additional sources.

Dinosaur biodiversity declined well before the asteroid impact, influenced by ecological and environmental pressures.
2021
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FL, C., G, G., MJ, B., & PJ, C. (2021). Dinosaur biodiversity declined well before the asteroid impact, influenced by ecological and environmental pressures.. doi.org. https://doi.org/10.1038/s41467-021-23754-0

The Mesozoic terminated in boreal spring
2022
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The Mesozoic terminated in boreal spring. (2022). hal.science. https://doi.org/10.1038/s41586-022-04446-1

2 recorded entries grouped as this source

Additional records of the same source are shown below. They are not counted as additional sources.

The Mesozoic terminated in boreal spring
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The Mesozoic terminated in boreal spring. (n.d.). cir.nii.ac.jp. https://doi.org/10.1038/s41586-022-04446-1

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