ancestors
Your ancestors are the people from whom you are descended.
forefather
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。
An ancestor of something modern is an earlier thing from which it developed.
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。