Definitions

1. noun

A geologic era that began approximately 66 million years ago and ended about 56 million years ago, corresponding to the Cretaceous-Paleogene boundary.

“The palaeogene period is characterized by a significant change in the Earth’s climate and geography.”

2. adjective

Relating to or characteristic of the Palaeogene era, especially in geology or paleontology.

“The palaeogene fossils found in the excavation provided valuable insights into the evolution of life on Earth.”