Snake Person

The Snake People were a posthuman species that evolved from the Worms.

After a climate change happened on the homeworld of the worms, the cooler climate made it possible for life to reclaim the surface world. Animals branched into millions of surface species, among them a group of worm-descended mammalian tree-snakes.

Eventually, one species of tree-snakes evolved sapience again, using spirally coiled brains and a single hand at the end of their tails, a remnant of their ancestors feet.

The Snake People's development mirrored that of their distant human ancestors, including several agricultural world empires, followed by industrial revolutions, social experiments, world wars, civil wars and globalization.

The cities of the Snake Peoples were tangles of pipe like tunnels, branching, three dimensional railroads and windowless, hole-like buildings. The cities were totally devoid of any plazas and open areas because of the species wide agoraphobia of their inhabitants.

Their art includes books and vibrational ground-music.

They belonged to the third wave of posthumans joining the Second Galactic Empire founded by the Killer Folk and the Satyriacs.

Over a timespan of about 80 million years, the Second Empire developed, through the combined effort of all members, into a galaxy-spanning empire, even though the members never met each other personally, and all of the species colonized other planets.

Though they were prepared to face an alien invasion, the Empire didn't think about an invasion from other posthumans, and so the Snake People, along with all of their cousins, were quickly wiped out by the Gravital as part of their interstellar conquest.