The geological age of the earth warm and humid climate, over the river connecting Lake swamp large tracts of land on the true fern, cycads, gymnosperms and conifer wood is very busy.

• 这一地质年代，地球上气候温暖湿润，密布的河流连接着大片的湖泊沼泽，陆地上的真蕨、苏铁、裸子植物及针叶树木十分繁盛。