Flora and Fauna

Ancient Era
During the times of the Tharsians and Troglodytes, Mars was a lush landscape that was filled with Earth-like flora and fauna. The environment was very similar to that of Earth, and the Wyrdos selected specimens from analogous environments on Earth to create suitable living conditions for the proto-humans.

Modern Era
The Mars landscape is barren and desolate with a very thin atmosphere outside the domes. Not many things are able to survive on the outside. Inside the domes are organisms the colonists brought with them from Earth. Some were thought to be useful for colonization, while others were smuggled or brought by accident. The dome-organisms include things like algae, fungi, trees, food crops, bamboo, bacteria, etc.

Not much can sustain itself in the conditions outside the dome for long. However, the wasteland is not completely empty. Here is a list of all known organisms outside the domes; whether they are truly alive is up to debate.
 * Medusa
 * Zombie
 * Mysterious bio/nano-tech virus/spore/bacteria