“All these fossils occur in a layer no more than 10cm thick,” said palaeontologist Ken Lacovara of the Chicxulub impact that ended the dinosaur epoch. “They died suddenly and were buried quickly. It tells us this is a moment in geological time. That’s days, weeks, maybe months. But this is not thousands of years; it’s not hundreds of thousands of years. This is essentially an instantaneous event.”
Life returned very quickly to the Chicxulub crater after the asteroid hit Earth with an impact equivalent to 10 billion Hiroshima bombs. Microfossils found in the core sample show that life at the crater reappeared after about 30,000 years, roughly when it reappeared in other locations, according to , Christopher Lowery, a researcher at the University of Texas-Austin. “You see that resurgence across the globe”, he added.