In 2021, a team led by Dr Gary Kinsland of the University of Louisiana at Lafayette found evidence that the impact and resulting tsunami left "megaripples" of sediment 16 meters (53 feet) high and 600 ...

Foraminifera are single-celled marine organisms with a calcareous shell. They not only provide evidence of past habitats, but also play an important role in sediment formation.

Researchers did not expect the huge size of the meteorite given the frigid continent's history of thousands of space rocks ...