Phanerozoic Eon Induano Induense Induan Ind Induiën induano indusi Lopingian Epoch Early Triassic Epoch indu indu Инд 印度期 younger bound -251.2 Ma Induan Age Geologic Time Scale (2020) Base of Mesozoic Base of Olenekian Induen Induen Mesozoic Era Permian Period a1.1.2.3.3.2 older bound -251.902 +|-0.024 Ma Olenekian Age Triassic Period Paleozoic Era Indis インドゥアン期 indij Changhsingian Age Indusium Indu Indus Indu Indu