As requested, here's a timeline of the Lytian species. Check below for a link to the full Species Guide as well.

Perhaps due to all the radiation emitted by the four stars in their young star system, Lytians evolved quickly. They quickly mastered their environment, then took to the stars.
They interacted with other space-faring species, invented their trademark cybernetic masks, and made a name for themselves in the intergalactic community.
Nowadays, Lytians live peacefully on Lytia and have also spread throughout the galaxy as peaceful traders, explorers, and diplomats. There are Lytian settlements on planets and space stations, as well as nomads who spend their entire lives exploring deep space.

I also included the birth years of a couple of my own Lytian characters, Mica and Tello. If you have a Lytian that you want added to the history, let me know!

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In addition to this visual timeline, I created a huge text document that covers Lytian Biology, Culture, and Sexual Characteristics.
You can always find the latest version of that document right here:
Lytian Species Document

If you have any questions about Lytians, please ask and I'll add the answers to that document.

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Lytians are an open species, meaning you are welcome to make your own Lytian characters, adopts, and anything else. More information can be found in the Lytian Visual Guide.
GG Tauri image credit: ESO/L. Calçada - Free to share/adapt under CC BY 4.0