Wolverine: Snikt!
In this comic by Tsutomu Nihei, Wolverine is sent into an alternate future, arriving there by the hand of the humans of that age in need of a weapon to fight against a race of engineered viruses that grow up to be sentient beings, and who can only be destroyed with adamantium. Though whether this is the future of the Marvel universe or whether it is a crossover into another universe is not completely made clear. This is mainly because Marvel has so many alternate futures and universes, making it difficult to place this particular world within them.
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