This is real minor... but I just started the new extinction event, and I actually decided to read the descriptions as I went. The first one is the first generator, L.U.C.A., which says:
"The last universal common ancestor (LUCA) is the earliest microbe from which all modern life descends." - that's wrong, although it seems unintuitive, it's actually the youngest, or latest, microbe from which all modern life descends. The earliest one would be the F.U.C.A. - first universal common ancestor, which isn't nearly as interesting.
I'm using version BETA - 25_73 Android OS 14.