Oldest Animal Fossils Discovered | Wired Science from Wired.com

The animals’ remains don’t look like traditional fossils. They’re more like fossil echoes: chemical traces of a compound only produced — at least in modern times — by demosponges, descendants of what some scientists consider to be the last common ancestor of all animals.
“It is, definitively, the earliest evidence for animals,” said geochemist Gordon Love of the University of California, Riverside, lead author of the study published Wednesday in Nature.

Oldest Animal Fossils Discovered | Wired Science from Wired.com

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