Inthe early middle pleistocene, the karst caves in Yangchun area began to develop.
在中更新世早期,阳春地区的岩溶洞穴开始发育。
The third fold developed between late early Pleistocene and early Middle Pleistocene.
早更新世晚期,中更新世初期,第三排褶皱开始形成。
Some fossil bones with surface marks were uncovered in Bailong Cave, a palaeo-anthropological site of the early stage of Middle Pleistocene.
湖北省郧西县白龙洞古人类遗址属于中更新世早期,发掘出表面带有痕迹的骨化石标本。
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