Evidence for an extraterrestrial impact 12,900 years ago that contributed to the megafaunal extinctions and the Younger Dryas cooling
有证据表明，12900 年前的一次地外撞击导致了巨型动物灭绝和新仙女木期气候变冷
期刊:Proceedings of the National Academy of Sciences of the United States of America
影响因子:
doi:10.1073/pnas.0706977104
R B Firestone, A West, J P Kennett, L Becker, T E Bunch, Z S Revay, P H Schultz, T Belgya, D J Kennett, J M Erlandson, O J Dickenson, A C Goodyear, R S Harris, G A Howard, J B Kloosterman, P Lechler, P A Mayewski, J Montgomery, R Poreda, T Darrah, S S Que Hee, A R Smith, A Stich, W Topping, J H Witt
