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concestor (plural concestors)
- (biology, uncommon) The last common ancestor, especially of several different species.
- Synonym: cenancestor
- Dawkins, Richard (2004) The Ancestor's Tale p.7 "In a backward chronology, the ancestors of any set of species must eventually meet at a particular geologic moment... the last common ancestor that they all share, what I shall call their "Concestor""