Key paragraph from that virginia.edu article:
“Even though the studies refer to a single man or woman in the past, they do not imply that those people were a couple or even that they were the only parents of all humans. Their primary significance is in pointing to the time when anatomically modern human beings, Homo sapiens sapiens, evolved from a more primitive ancestor, generally thought to be an archaic form of Homo sapiens. Most experts think the founders of the modern species numbered around 10,000.”
So looks like it is not referring to a single Adam or single Eve as our ancestors, and that the population of our human species from which we are descended never got below 10,000.
An article on Polygenism, Original Sin, Evolution, Pope Paul VI and Church teaching is
this one from EWTN, which suggests it is possible to reconcile, but difficult. Published in L’Osservatore Romano, the Vatican’s own newspaper.
The Catechism certainly seems to imply we descend from a single pair (especially paragraphs 359, 375-377, 379, 388, 390-392, and the summary of 416-419). Also don’t forget the July 2004 statement from the
International Theological Commission on Human Persons Created in the Image of God, especially 62-70.
Phil P