Fossils of the Ediacaran biota were found in the Ediacara hills in South Australia.
The fossils are dated at about 560 million years old, just before the beginning of the Cambrian Period. Similar fossils have been found in many parts of the world.

Ediacaran animals had flat bodies, which were laid on the seabed, and perhaps absorbed nutrition directly from the sea water. Little is known regarding these mysterious animals. Most of the Ediacaran biota became extinct by the Cambrian Period. However, animals underwent an evolutionary "explosion" at the start of the Cambrian Period.
What happened in the sea at that time is still a mystery.

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