Kamfanin Archean Eon ne na halitta wanda ya faru tsakanin kimanin shekaru 4 da suka gabata da shekaru 2.5 da suka gabata. EON ne na farko a tarihin duniya, kuma asalin samuwar da kuma juyin halitta na ɓawon burodi na duniya. A wannan lokacin, an fara fitowa ta farko, kuma rayuwa ta fara fito fili a cikin kwayoyin da aka kafa guda. An nada Archean Eon bayan kalmar Hellenanci "Archaios," wanda ke nufin "tsohuwar."