Boi ya Thĩ Yothe ya Mwano wa Mĩndĩ

Boi ya Thĩ Yothe ya mwano wa  mĩanoŨhianoICSMũũmbĩre1974MũthembaINGOGĩthimo kĩa bũrũriThĩinĩ wa Thĩ YotheRũthiomi rwa mũingĩKĩngiriki, KĩfaranjaŨrũmwe wa aciariŨmwe wa Njĩra cia Ũhoro wa Gĩthondeka (IUGS) Web siteICS website ya hĩa
Boi ya Thĩ Yothe ya Mwano wa Mĩndĩ wĩra wa thiomi cia mũingĩ (International Commission on Stratigraphy, ICS), rĩmwe ĩtagwo "International Stratigraphic Commission", nĩ thome wa thambo ĩrĩa ĩgiritanagia na mwano wa mĩndĩ,  gĩthomo gĩa nyaigĩ kana gĩthomo kĩnene kĩgie ũhoro wa mũkuũkĩre wa nyaigĩ na karungo ka thĩ ng'ima.