A team of researchers has identified the earliest known ecdysozoan fossil, which originated from the Precambrian era, the Ediacaran Period. The fossil is of a small, worm-like creature named Uncus ...

The fossils found date back to a geological and evolutionary period known as the Ediacaran–Cambrian transition. This was when the Ediacaran Period, which spanned 94 million years from the end of the ...

The first complex animals to have ever existed arose during the Ediacaran period (635–540 million years ago). Before then, less complex and single-celled organisms, like sponges and cyanobacteria, ...

The oldest fossils are 3.5 and 3.4 billion year old single-cell ... years ago in the Vendian Period of the Late Proterozoic as the soft body imprints of the Ediacaran fauna including probable members ...

curid=3262792 The Ediacaran period, which preceded the Cambrian, was a time of soft-bodied organisms. These creatures left behind few fossils, making it hard to study them. Among the known species is ...