ппт apt apt 阿普弟期 a1.1.2.1.2.2 Aptium Early Cretaceous Epoch Geologic Time Scale (2018) Aptiano Apt Apt Apt Apt aptiano Aptiën younger bound -113.0 Ma Albian Age Barremian Age Apti older bound -125.0 Ma Base of Aptian Aptis Base of Albian Phanerozoic Eon Aptian Age Aptiense Cretaceous Period apti Mesozoic Era Aptian アプチアン期 Aptien Aptien aptij