younger bound -494 Ma Guzhangian Age Paibian older bound -497 Ma Furongian Epoch Paleozoic Era Paibis Paibiense パイビアン期 Paibian Age Paibiën Phanerozoic Eon pajb Paibiano paibij Base of Jiangshanian Paib Paib Paib Paibi Jiangshanian Age Паиб Base of Furongian Paibium Paibium 排碧期 paibi Cambrian Period paib Paibien Paibien paibiano a1.1.3.6.1.3 Geologic Time Scale (2020) Miaolingian Epoch