Of, pertaining to, derived from, or possessed by, an ancestor or ancestors; as, an ancestral estate.

inherited or inheritable by established rules (usually legal rules) of descent; "ancestral home"; "ancestral lore"; "hereditary monarchy"; "patrimonial estate"; "transmissible tradition"

of or belonging to or inherited from an ancestor

Pertaining to characters which resemble those of earlier forms (sometimes "primitive" is used incorrectly as a synonym)