埃迪卡拉纪 āidíkǎlājì Ediacaran period Origin Definitions Defs Strokes Stroke Words Sentences Sents 埃迪卡拉 āidíkǎlā Ediacaran Ediacaran period; a geological period between roughly 635 and 541 million years ago during the late Precambrian era纪 紀 jì noun era (bound form) a period of time, such as a twelve-year cycle, a geological period, or a century; era