Oh, bighurb, I see you do not value mobility. Mobility developed first. There's walking plants. And most likely we evolved from a viral mutation or lost line. There's very little evidence of genetic design or transgenic species occurring naturally, perhaps unless we look at virus and bacteria. Not sure. One thing for sure is there are.bursts of mutation and new species showing up in the geologic record. I blame panspermia and life being more prevalent in space than commonly understood. Coupled with periods of intense climate change... A century, instead of a millennium. Ice in the outer solar system, kuiper belt is much younger than it should be. Periodically some new biological material survives atmospheric entry.... Once every few decades... Frozen ice full of algae like orgAnisms...suspended. or dead or adapted multicellular ones. DNA is probably mixed enough it would be hard to determine extraterrestrial origin outside of isotopes from first generation alien organisms.
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