Giant steps

It is not known how and to what extent Ediacaran animals are related to modern animals. Some of the Ediacaran species resembled jellyfish, worms and corals; but others had no similarity to any animals that exist today.

Modern comb jellyfish.

Photo: Matt Wilson/Jay Clark, NOAA NMFS AFSC

Perhaps the oldest known fossil of an animal? A comb jellyfish discovered in China and is ca. 550-580 million years old.

Photo: Tang et al, Chinese Academy
of Geological Sciences Beijing

Reconstruction of the comb jellyfish above.

Image: Javier Herbozo