Flexos (2018)

From the introduction:

Flexos is a backwater world whose vast deserts, exotic atmosphere, primitive starport, low population, and inconvenient location make it an unlikely stop except for ships plying the jump-2 route from Tarkine and Noctocol to Walston and the Bowman belt. The planet does have some undeveloped potential, however, in the form of its fluid oceans and unique plant life, and it is well-known in the xenobiology departments of universities in the Spinward Marches for the extensive ruins left by a long-extinct primitive race.

Flexos 0403 E5A1422-6 Fl Lo Ni 610 M1 V M2 D (Non-Aligned)