So I've been doing a reading of all the EP books and I noticed something odd.
In several sections on uplifts its stated that there were elephant uplifts but that they didn't make it through the Fall... but then in Sunward the Lunar city of Shackle has a herd of Indian elephants (they even show up in the picture!).
So presumably there are elephants in the solar system, its just that all the uplifted ones are dead/stuck on Earth? If so, I'm imaging an idea where radical mercurials decide to liberate the Shackle herd and transport them to the rim to be cared for by their fellow non-humans.