Extinction Core (also referred to as "Annunaki 2.0" by some users) is the new mod created by Psycho, who was one of the lead devs on Annunaki Genesis. Extinction Core is said to be the "new Annunaki" as it was redesigned and cleaned to Psychos vision, with increased things to do, fixes, new animals and variations on the original Annunaki.
As this is the Annunaki Genesis Wiki, all Extinction based changes should be redirected to the new wiki which solely focuses on Extinction Core. The new wiki can be found here.
Please note that Annunaki Genesis wiki will be updated with any changes if required, but as most (if not all) development is focused into Extinction, that wiki may be updated more.