In death of dinosaurs, it was all about the asteroid

[Oxytropidoceras]

Yale University. "In death of dinosaurs, it was all about the asteroid

-- not volcanoes." ScienceDaily. ScienceDaily, 16 January 2020.

https://www.sciencedaily.com/releases/2020/01/200116141708.htm

 

Meteorite or Volcano? New Clues to the Dinosaurs’ Demise

Twin calamities marked the end of the Cretaceous period, and

scientists are presenting new evidence of which drove one of

Earth’s great extinctions. New York Times, January 16, 2020

https://www.nytimes.com/2020/01/16/science/dinosaurs-extinction-meteorite-volcano.html

 

The paper is:

 

Hull, P.M., Bornemann, A., Penman, D.E., Henehan, M.J., Norris, R.D., 

Wilson, P.A., Blum, P., Alegret, L., Batenburg, S.J., Bown, P.R. and 

Bralower, T.J., 2020. On impact and volcanism across the Cretaceous-

Paleogene boundary. Science, 367(6475), pp.266-272.

https://science.sciencemag.org/content/367/6475/266.abstract

 

Yours,

 

Paul H.