History and Flag
The flag was created by Tumblr user genderrose on January 26, 2019. Created at the same time as the paleolithgender and neolithgender flags, it has a similar use of muted colors and number of stripes.
- Archived Tumblr post on mesolithgender.
- Archived Tumblr post on the changing of mesogender to mesolithgender.
- Archived Tumblr post displaying flags for mesolithgender as well as paleolithgender, neolithgender, and ripegender.
- Tumblr user genderrose, currently known as gendersylvestrium, has also gone by the usernames altergender, aresgoesgender, beysgender, exosphenic, hawaiiaine, mason-the-owlkin, mogai-minecraft-snail, ostereigender, polysexualtea, and thepancherryblossom.