sea sponges
Researchers Discover Oldest-Ever Evidence of Animals on Earth
Demosponges, the first multicellular animals on earth, emerged 635 to 660 million years ago after a “Snowball Earth” period when the earth was almost completely frozen.
Who Lives in a Pineapple Under the Sea? The First Animal on Earth
Sea sponges have planetary seniority. Respect your elders.
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