Dino-killing asteroid killed 93% mammals: Study
A study by England-based researchers revealed that over 93% of mammal species were wiped off by the dinosaur-killing asteroid crash, which took place in the Cretaceous period over 66 million-years-ago. The researchers also found that the remaining mammals took 3,00,000 years to double the species count that had existed before the crash-caused mass extinction, much faster than previously thought.