[central_va]

By accumulating changes in the genome sufficient to differentiate the descendant population from the prior population retaining most of the prior genome’s characteristics.

That is not creating a new species, that changing an existing species perhaps thru natural selection. Where are the "missing links"?

[WhiskeyX]

“That is not creating a new species, that changing an existing species perhaps thru natural selection.”

Your “that changing an existing species perhaps thru natural selection” is incomprehensible language.

Yes, changes in the genome which differentiates the successor population from the parent population does create a different species.

“Where are the “missing links”?”

Perished.