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190A - March 1983

End of Cretaceous: Five Seconds Before Impact

190B - March and June 1983

End of Cretaceous: One Second Before Impact, with 10km Diameter Asteroid

191 - March 1983

Sixty Seconds After Impact on 10km Asteroid

328 - February 1991

One Month After End of Cretaceous

332 - May 1991

KT Impact Crater: 1000 Years After Beginning of Tertiary