Ancestral estate was 'strictly tied to the family.
In other respects the palaeotheres resemble the ancestral horses.
It has been insisted, by those who accepted Lankester's original doctrine of the direct or genetic affinity of the Chaetopoda and Arthropoda, that Apus and Branchipus really come very near to the ancestral forms which connected those two great branches of Appendiculate (Parapodiate) animals.
A, Unrotated ancestral condithe sub-intestinal) visceral tion.
13, 16), were ancestral images is a reasonable theory.