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Well, it is either a turtle or an alligator because they are very wise and I think they were living at the time of the dinosaurs. Thank You!

P.S. I think more of the Turtle because I saw it on a documentary!

That is of course if you are ruling out zooplankton.

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12y ago
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12y ago

The oldest living organisms on earth are Archaebacteria, which belong to the domain Archaea. They are quite different from bacteria and are now more properly called Archaea.

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15y ago

Alligator Garr is a fish that has been here since the dino's

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14y ago

Organisms with large generation time or reproductive cycle will take the longest time to evolve.

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11y ago

Archabacteria are the thought to be most oldest organisms on earth

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11y ago

Micro organisms. Fossilized mats of bacteria, known as stromatolites, have been dated to more than 3 billion years old.

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10y ago

single celled organisms

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Q: What organism took the longest time to evolve?
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