These Alien-Looking Fossils May Explain the Origins of Complex Life

Exceptionally preserved fossils from the Ediacaran period challenge what scientists thought was possible in sandstone. In the fossil record, creatures without hard shells or skeletons, such as jellyfish, are rarely preserved for long periods of time. Preservation is even less likely in sandstone, a rock made of coarse grains that is full of pores and [...]

from SciTechDaily https://ift.tt/aTmrNd4