New Research Strengthens Asteroid Impact as Cause of Dinosaur Extinctions
Fresh Clues In Dinosaur Whodunit Point To Asteroid
by Adam Cole, All Things Consdiered, February 7, 2013
Asteroid Impact That Killed the Dinosaurs: New
Evidence. LiveScience.com, February 6, 2012
New Evidence Strengthens Argument That Dinosaurs
Died As Result of Asteroid Impact (New study says
cosmic impact, dinosaur extinction were 'synchronous
events') by Jason Koebler, US News,
After the Dinosaurs Died This Furball Started the Next
Big Thing, Wired news, February 8, 2013
The papers are,
Palike, H. 2013, Impact and Extinction. Science.
vol. 339 no. 6120 pp. 655-656
Renne, P. R., a. L. Deino, F. J. Hilgen, K. F. Kuiper,
D. F. Mark, W. S. Mitchell III, L. E. Morgan, R. Mundil,
and J. Smit, 2013, Time Scales of Critical Events
Around the Cretaceous-Paleogene Boundary. Science.
vol. 339, no. 6120, pp,. 684-687.
O'Leary, M. A., J. I. Bloch, J. J. Flynn, and many others, 2013,
The Placental Mammal Ancestor and the Post–K-Pg Radiation
of Placentals. Science. vol. 339, no. 6120, pp. 662-667