Did you not read your own link before posting it?
The 1st line of the article you conveniently snipped
Dinosaurs died off about 33,000 years after an asteroid hit the Earth, much sooner than scientists had believed, and the asteroid may not have been the sole cause of extinction, according to a study released Thursday.
And the 33K years is still dumb,
Is the Tunguska event that happened in 1908 going to be responsible for extinctions 32,982 years from now?
Life recovers quickly, Tunguska for instance, if you go there today, most of the evidence is long gone. Same would have happened with Chixalub, even if it was a meteor, if it didn't kill it out right, whatever survived would rebound and back to normal numbers within a decade or two.
Please add me to the catastrophism ping list.
An Indian scientist, Chaterjee (sp?) has also postulated a huge crater off Mumbai, much larger than the one for Yucatan and possible cause of the Deccan Trappes.