The First Animal on Earth Now Confirmed!
Geege Schuman stashed this in Sea Creatures
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Is it a sponge?
In new genetic analyses, it has been confirmed that sea sponges are the source of a curious molecule that has been found in rocks that are 640 million years old. These rocks considerably predate the Cambrian explosion, which is the period believed when most animal groups had taken over the planet, around 540 million years ago.
Not that long before the dinosaurs. I didn't realize earth was without life for such a long time.
Also interesting that sponges predate other animals by 100 million years. Wow.