Corticean Era

In the Corticean Era (4,000 mya before date), the first lifeforms emereged more or less simultaneously at the Ancient Volcanic Ridge , around volcanic islands and the shoreline of the southern continent. They were simple, immobile lifeforms, that only slowly changed the world around them. The shoreline-group produced oxygen with the help of light, but only in very small quantities, while the other groups relied fully on chemical autotrophy in the deep ocean.
During the Corticean Era Marego was mostly warmed by it's own radioactive core, as the light from young Ilaga was weak and often blocked off by volcanic ashes or vapor. Only around the small southern continent the conditions were favorable enough to allow light and energy from the central star to reach into the shore waters. There was almost no free oxygen, as it all was used up by the chemicals in the air and water.
The heavy bombardement from astroids and comets found it's end during the late Orcidean Era, after the formation of Inyaga , so early life was able to stabilize and reproduce itself on a larger scale. The information-storing molecules of that time are mostly RNA, but DNA had also developed. With volcanic activities and plate tectonics evolution was slowly on the rise.

Early Corticean

The Early Corticean was a periode of high volcanism and without the existence of the Old Southern Continent . Layered rocks around the old basaltic rocks are interpreted as the first signs of life on the planet, even thou it doesn't seem to be as complex as the first Corticeans . The periode was further characterized by a still unstable axis and rotation speed, as Inyaga had not yet stabilized the planet. The young Ilaga was only shining with about two thirds of it's modern power and the low light and high radiation was further blocked of by a thick atmosphere of volcanic ashes and vapor.

Middle Corticean

During this period the first unicellular life on Marego took off. All five diffrent forms of Corticeans are believed to have originated in this part of the era, with the first being the deep-sea chemotrophes which lived alongside the Ancient Volcanic Ridge and around the smaller volcanic islands. It is not yet clear, if this forms have developed intependently or if the early Coritceans would have survived a drift through the ocean to other hospitable places. Early plate tectonics, possibly fueled by the high evaporation rate and hot planetary insides, gave rise to the Old Southern Continent. The slopes of it where exposed to enough light that the last group of Corticeans, Corticena Timmii , a photosynthetic silicate-based organism, arose.

Late Corticean

The latest part of the era, which spun approximatly one billion years, gave rise to new complex organism. C. Julii and C. Georgii developed both flagellae, which allowed them to move acively around, and the ability to feed on other cells. Descendants of C. Ricardii on the other hand developed strategies against being prayed on, which allowed them to survive inside the food vacuoles of it's predators and instead life on their energysource, protected by their bigger bodies. In exchange they provided their hosts with taking over the synthesis of ATP. C. Anni used other means of security and reproduction. As an organism with a di-lipide layer it was able to transfer gene-fragments with C. Julii and C. Ricardii and over time it's descendants got fully dependend on their host's ability to reproduce their genetic material and build up their cells, which lead to them combining into new species Much later in the era, almost half a billion years bevor it ended, another big jump occured. The descendants of C. Julii and C. Georgii met C. Timmii and prayed on them. C. Georgii and C. Timmi were able to exchange genes on occasion, leading to a photosythetic mono-cell that was both bigger and more mobile than C. Timmii and thus more adabtable to new environments. C. Julii on the other hand incorporated parts of C. Timmiis interior in much the same way it did before with C. Ricardii, leading to a more complex organism. The beginning of photosynthesis by mobile organisms marked the change into the next era, the Oxidean .