Search results
Since the 19th century, a significant amount of research has been conducted on the Cretaceous–Paleogene extinction event, the mass extinction that ended the dinosaur-dominated Mesozoic Era and set the stage for the Age of Mammals, or Cenozoic Era. A chronology of this research is presented here.
Feb 8, 2013 · Abstract. Mass extinctions manifest in Earth's geologic record were turning points in biotic evolution. We present 40 Ar/ 39 Ar data that establish synchrony between the Cretaceous-Paleogene boundary and associated mass extinctions with the Chicxulub bolide impact to within 32,000 years.
- Paul R. Renne, Paul R. Renne, Alan L. Deino, Frederik J. Hilgen, Klaudia F. Kuiper, Darren F. Mark, ...
- 2013
The Cretaceous–Paleogene (K–Pg) extinction event, [a] also known as the Cretaceous–Tertiary (K–T) extinction, [b] was the mass extinction of three-quarters of the plant and animal species on Earth [2] [3] approximately 66 million years ago. The event caused the extinction of all non-avian dinosaurs.
We present 40Ar/39Ar data that establish synchrony between the Cretaceous-Paleogene boundary and associated mass extinctions with the Chicxulub bolide impact to within 32,000 years. Perturbation of the atmospheric carbon cycle at the boundary likely lasted less than 5000 years,
- 1MB
- 29
Feb 23, 2023 · To assess the impact of the K-Pg extinction event, we compiled global species-level fossil occurrence data for elasmobranchs covering a time interval between 93.9 and 56 Ma (most of the Late Cretaceous and Paleocene).
The Cretaceous/Paleogene mass extinction, 66 Ma, included the demise of non-avian dinosaurs. Intense debate has focused on the relative roles of Deccan volcanism and the Chicxulub asteroid impact as kill mechanisms for this event.
People also ask
What happened at the Cretaceous-Paleogene boundary?
What happened during the Cretaceous–Paleogene extinction?
Did extinction occur near the Cretaceous-Paleogene boundary?
Was the end of the Cretaceous a extinction event?
The Cretaceous-Paleogene boundary ~65.5 million years ago marks one of the three largest mass extinctions in the past 500 million years. The extinction event coincided with a large asteroid impact at Chicxulub, Mexico, and occurred within the time of Deccan flood basalt volcanism in India.