Along with the earth s changing, slowly the sea disappeared from Sangiran. Sangiran was changed into swamp environment. Pucangan Formation which is dated from 1,8 million – 900,000 indicates the changes, from marine to land environment. (Pipit Puji Lestari, Marlia Yulianti Rosyidah, Febri Wijanarko, Iwan SB) Plese click here
 which is dated from 1,8 million - 900,000 indicates the changes){kind=link}