Around 66 million years ago, a catastrophic event known as the Cretaceous–Palaeogene (K–Pg) mass extinction wiped out nearly 75% of Earth’s species, including the non-avian dinosaurs.

but it wasn’t until 1990 that researchers linked it to the Cretaceous–Palaeogene extinction event. In 2022, a 9-kilometre-wide crater, made at about the same time as the Chicxulub crater ...

The Cretaceous-Palaeogene extinction 66 million years ago is possibly the most famous mass extinction event. It was caused by a large asteroid crash-landing off the coast of Mexico, which changed the ...

For the famous boundary 66 million years ago that marks the switch in period from the Cretaceous to the Palaeogene, this "golden spike" is represented by traces in sediments of the element iridium.

The Alvarez pair identified a layer of sediment at the boundary of the Cretaceous and Palaeogene geological periods that was enriched with iridium, an element commonly found in asteroids and ...

Sharks soon began to increase in size once again, and continued to evolve larger forms throughout the Palaeogene (66 to 23 million years ago). It was during this time that Otodus obliquus, the ...

Primates are smart, flexible, and adaptive creatures. How have they responded to changes in climate over millions of years? Climate is the major factor that determines where a species can and ...

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