Argentiferous Period

The Argentiferous Period is third period of Plutolithic Era and seventh period of Rathnirian pre-history.

Main rock from this period is large deposit of silver (argentum) in territories of former Sterling Crownlands. Temperature during this period varied from temperate ~+14 during inter-glacial period to ~-12 during strongest ice age, when Rathnir was almost entirely covered with slice of ice. This sub-period also called "Frozen Rathnir". No matter of ice ages, life still thrived underneah ice sheets, in a sea. During this period, fungi and algae had evolved from the begginigs of highly-organised multicelluar life (first fungi and algae) to complex analogs of them. But during this period there still no sights of multicelluar animals, what makes Argentiferous period "Era of Fungi-Algae dominance".