The extinct animal's face structure could help explain how vertebrates, including ourselves, evolved our distinctive look.

Controversial evidence hints that complex life might have emerged hundreds of millions of years earlier than previously ...

Invertebrates, ranging from arthropods to mollusks, exhibit an astonishing diversity of sensory modalities and behaviors. These organisms navigate complex ...

Long thought extinct, a 750-limbed creature has been found near Silicon Valley—and this millipede's got claws and even its own "clothing." ...