时代T2命名广西区域地质测量大队，1974年命名。岩性以砂岩为主的砂泥岩互层。特征含菊石：Leiophyllites cf. confucii，Balatonites sp.，B. balatonicus，B. multisulcatus，Danubites kansa，Hollandites sp.，，Bulongites sp.，Paracrochordiceras sp.，Cuccoceras sp.，Paraceratites sp.，Huishuites sp.，Japonites sp.，Judicarites sp.，Anolcites sp.，Beyrichites sp.；双...