Volcanic eruptions triggered dawn of the dinosaurs
(Huge pulses of volcanic activity are likely to have
played a key role in triggering the end Triassic mass
extinction, which set the scene for the rise and age
of the dinosaurs, new Oxford University research
has found.)
http://www.heritagedaily.com/2017/06/volcanic-eruptions-triggered-dawn-dinosaurs/115652
https://www.sciencedaily.com/releases/2017/06/170619151530.htm
Dinosaurs got an evolutionary assist from huge
volcanic eruptions by Mary Beth Griggs Popular Science
http://www.popsci.com/volcanic-eruptions-dinosaur-evolution
The paper is:
Lawrence M. E. Percival, Micha Ruhl, Stephen P.
Hesselbo, Hugh C. Jenkyns, Tamsin A. Mather, and
essica H. Whiteside. Mercury evidence for
pulsed volcanism during the end-Triassic
mass extinction. PNAS, June 2017 DOI: 10.1073/pnas.1705378114
http://www.pnas.org/content/early/2017/06/13/1705378114
Yours,
Paul H.