The phrase "ancestral line" refers to the line of direct descendants in a family, usually traced back several generations. It represents the family members who came before us and passed on their genes, traditions, and heritage to us. Full definition
Merrick Pet Care debuted its new ancestral line for dogs, Backcountry, with dry products that include freeze - dried raw bits. (merrickpetcare.com)
Dogs have been selectively bred for thousands of years, sometimes by inbreeding dogs from the same ancestral lines, sometimes by mixing dogs from very different lines. (sciencedaily.com)
The AKC offers certified pedigrees that state the puppy's ancestral line going back three or four generations. (reference.com)