This generation contains at least 160 species. (Overflow limit: 200)

This topic will be archived following species transfer to the wiki. This thread is only for approved species, do not post unapproved species here.

Note that the compendium exists mainly for archival purposes. If you simply wish to browse species, you should use the wiki instead, as it is more organized and up-to-date. https://sagan4beta.miraheze.org/wiki/Generation_21

We just had a mass extinction event! For this generation only, all fauna may grow up to 4x and all flora may grow up to 8x. Adaptations for low oxygen conditions are recommended. Note that crystal flora can no longer exceed 1 meter without justification. Please try to fill in neglected / empty or mostly empty biomes this generation (marked in red), as well.