remote ancestor远祖;远代的祖先
ancestor widget原始窗口部件;父辈小窗口
ancestor bodying原身楼宇
dissimilar ancestor不同祖先
core ancestor核心亲本
ancestor god祖先神
primitive ancestor原始先民
cultural ancestor文化祖先
chinese ancestor华夏先民
Three finless porpoise populations in Chinese waters had a common ancestor before 058～108 Mya ago.
各种群在距今58～108万年以前有一个共同祖先。
参考来源 - 中国水域江豚种群遗传变异的研究Wild lotus is the ancestor of cultivar lotus, and serve as a natural gene bank for breeding of fine lotus varieties.
野生莲是栽培莲的祖先,是培育优良莲品种的天然基因库。
参考来源 - 黑龙江流域野生莲的遗传多样性N-COUNT（可数名词） Your ancestors are the people from whom you are descended. 祖先 [usu pl, with poss]
...our daily lives, so different from those of our ancestors.
…我们的日常生活，与我们祖先的生活如此不同。
N-COUNT（可数名词） An ancestor of something modern is an earlier thing from which it developed. 物种原型
The direct ancestor of the modern cat was the Kaffir cat of ancient Egypt.
现代猫的直系物种原型是古代埃及的卡菲尔猫。