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1. www.nature.com › articles › s41467/021/23754-0Dinosaur biodiversity declined well before the asteroid ...

   www.nature.com › articles › s41467/021/23754-0

   Jun 29, 2021 · There is a debate about how these events affected non-avian dinosaurs, and yet little evidence exists for a global decline across dinosaur groups prior to their extinction at the end of the ...

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3. royalsocietypublishing.org › doi › 10The megaherbivore gap after the non-avian dinosaur ...

   royalsocietypublishing.org › doi › 10

   Apr 13, 2022 · The Cretaceous–Palaeogene (K-Pg) extinction of the non-avian dinosaurs (66 Ma) led to a 25 million year gap of megaherbivores (>1000 kg) before the evolution of megaherbivorous mammals in the Late Eocene (40 Ma). The botanical consequences of this ‘Palaeocene megaherbivore gap’ (PMHG) remain poorly explored.

4. pubmed.ncbi.nlm.nih.gov › 34188028Dinosaur biodiversity declined well before the asteroid ...

   pubmed.ncbi.nlm.nih.gov › 34188028

   Jun 29, 2021 · The question why non-avian dinosaurs went extinct 66 million years ago (Ma) remains unresolved because of the coarseness of the fossil record. A sudden extinction caused by an asteroid is the most accepted hypothesis but it is debated whether dinosaurs were in decline or not before the impact. We an …

   • Author: Fabien L Condamine, Guillaume Guinot, Michael J Benton, Philip J Currie

   • Publish Year: 2021

5. www.nature.com › articles › s41559/024/02427-3Jury remains out on decline of non-avian dinosaurs | Nature ...

   www.nature.com › articles › s41559/024/02427-3

   May 14, 2024 · In recent years there has been considerable interest in determining whether dinosaurs were in decline in the run up to the asteroid impact that probably caused their mass extinction at the end of ...

   • Author: Luíseach Nic Eoin

   • Email: luiseach.niceoin@nature.com

6. www.smithsonianmag.com › smart-news › study-suggestsDinosaurs May Have Been Declining Before the Asteroid Struck ...

   www.smithsonianmag.com › smart-news › study-suggests

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   Jun 30, 2021 · Jorge Gonzalez. Non-avian dinosaurs were already in decline some 10 million years before the asteroid impact that ended their reign over the planet 66 million years ago, according to a new study ...

7. www.sciencedaily.com › releases › 2021Dinosaurs were in decline before the end | ScienceDaily

   www.sciencedaily.com › releases › 2021

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   Jun 29, 2021 · Dinosaurs were in decline before the end. Date: June 29, 2021. Source: University of Bristol. Summary: The death of the dinosaurs 66 million years ago was caused by the impact of a huge asteroid ...

8. People also ask

   Why did non-avian dinosaurs go extinct 66 million years ago?

   • The question why non-avian dinosaurs went extinct 66 million years ago (Ma) remains unresolved because of the coarseness of the fossil record. A sudden extinction caused by an asteroid is the most accepted hypothesis but it is debated whether dinosaurs were in decline or not before the impact.

   Dinosaur biodiversity declined well before the asteroid impact

   www.nature.com/articles/s41467-021-23754-0

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   Did non-avian dinosaurs die before the asteroid impact?

   • These results support an environmentally driven decline of non-avian dinosaurs well before the asteroid impact. The most famous mass extinction was the disappearance of non-avian dinosaurs at the end of the Cretaceous, 66 million years ago (Mya), after ruling the Earth for 170 million years 1, 2, 3.

   Dinosaur biodiversity declined well before the asteroid impact

   www.nature.com/articles/s41467-021-23754-0

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   Why did avian dinosaurs decline before asteroid impact?

   • The latter is likely due to hadrosaurs outcompeting other herbivores. We also estimate that extinction risk is related to species age during the decline, suggesting a lack of evolutionary novelty or adaptation to changing environments. These results support an environmentally driven decline of non-avian dinosaurs well before the asteroid impact.

   Dinosaur biodiversity declined well before the asteroid impact

   www.nature.com/articles/s41467-021-23754-0

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   Why did dinosaurs go extinct 66 million years ago?

   • A sudden extinction caused by an asteroid is the most accepted hypothesis but it is debated whether dinosaurs were in decline or not before the impact. We an … The question why non-avian dinosaurs went extinct 66 million years ago (Ma) remains unresolved because of the coarseness of the fossil record.

   Dinosaur biodiversity declined well before the asteroid impact

   pubmed.ncbi.nlm.nih.gov/34188028/

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   Did dinosaurs die before asteroid impact?

   • Scientists now show that they were already in decline for as much as ten million years before the final death blow. The death of the dinosaurs 66 million years ago was caused by the impact of a huge asteroid on the Earth. However, palaeontologists have continued to debate whether they were already in decline or not before the impact.

   Dinosaurs were in decline before the end | ScienceDaily

   www.sciencedaily.com/releases/2021/06/210629130518.htm

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   Did dinosaurs die 66 million years ago?

   • The death of the dinosaurs 66 million years ago was caused by the impact of a huge asteroid on the Earth. However, paleontologists have continued to debate whether they were already in decline or not before the impact. Scientists now show that they were already in decline for as much as ten million years before the final death blow.

   Dinosaurs were in decline before the end | ScienceDaily

   www.sciencedaily.com/releases/2021/06/210629130518.htm

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9. www.forbes.com › sites › startswithabangThe Science Of Why An Asteroid, Not A Comet, Wiped Out The ...

   www.forbes.com › sites › startswithabang

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   May 18, 2021 · The strike that led to the extinction of the dinosaurs, on energy concerns alone, could have been either a ~7 km comet or a ~10 km asteroid. When the rest of the evidence is examined, however, an ...