Fossil skulls reveal how extinct mammals smelled the world, with new research linking olfactory bulb size to gene counts.

Paleontologists from UChicago use CT scanning and software simulations to show how a 250-million-year-old mammal predecessor ...

One of the most important steps in the evolution of modern mammals was the development of highly sensitive hearing. The ...

The sense of smell is vital for animals, as it helps them find food, protect themselves from predators and interact socially.

Today’s mammals are the product of 200 million years of evolution, but scientists aren’t sure exactly how features of modern mammals came to be. A twin pair of studies published in the journal tackles ...

Olfactory receptor (OR) genes, representing the largest multigene family in mammalian genomes, have undergone extensive evolutionary modifications characterised by dynamic patterns of gene duplication ...

Human hunting, not climate change, played a decisive role in the extinction of large mammals over the last 50,000 years. This conclusion comes from researchers who reviewed over 300 scientific ...

When males are forced to compete for females, new species form more rapidly. This has been shown in a new study where the ...

A newly identified fossil snake reveals clues about early advanced snake evolution. Its mixed traits highlight an ancient branch of the caenophidian family tree. More than forty years after it was ...

Scientists discovered a new human species, Homo juluensis, in the Xujiayao site in China that lived 200,000 years ago.