It has usually been considered that the ancestral form of man originated in the tropics, where vegetation is most abundant and the climate most equable.
Footnote 122: Klaatsch in his last publications speaks in the main only of an ancestral form common to men and anthropoid apes.
In any case this difficulty is not greater on the hypothesis of the Zoaea being an ancestral form, than on that of its being a purely larval one.
It is clear that the Cypris stage represents more or less closely an ancestral form of the Cirripedia, and that both the large bivalve shell and the compound eyes were ancestral characters.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "ancestral form" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
