Simple past tense and past participle of coexist.(verb)
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Use "coexisted" in a sentence
"I think he coexists with the monster as Steve Irwin coexisted with crocadiles, they could function together, but he couldn’t train them to do what he wanted."
"What has changed is that the branches of the tree go back deeper in time, and rather than a sharp changeover, there was a more prolonged period of history in which, clearly, fish, fishapods, and tetrapods coexisted, which isn't surprising at all."
""coexisted" with humans for the better part of the last 9,000 years."