An assemblage of more than 700 Ediacaran fossils from the end of the Ediacaran period indicates that key animal groups — including early relatives...
Ikaria wariootia, a wormlike creature that lived more than 555 million years ago (Ediacaran period) in what is now Australia, is the earliest bilaterian,...
The oldest known animal ‘footprints’ on Earth, left by bilaterian animals with paired appendages about 545 million years ago, have been discovered...
