ancestral
/ænˈsestrəl/adjective
- of, belonging to, inherited from, or denoting an ancestor or ancestors祖先的; 祖传的：
the family's ancestral home
这一家族的祖籍
the only records of the ancestral forms are their fossils.
惟一可以记录它们祖先样子的是化石。
词源
late Middle English: from Old French ancestrel, from ancestre （see ANCESTOR）.