+ /**
+ * Returns the {@link agent.INomenclaturalAuthor author (team)} that contributed to
+ * the publication of the original combination this non viral taxon name is
+ * based on. This should have been generally stated by
+ * the {@link #getCombinationAuthorTeam() basionym author (team)} itself.
+ * The presence of a basionym author (team) of this non viral taxon name is a
+ * condition for the existence of an ex basionym author (team)
+ * for this same name.
+ *
+ * @return the nomenclatural ex basionym author (team) of this non viral taxon name
+ * @see #getBasionymAuthorTeam()
+ * @see #getCombinationAuthorTeam()
+ * @see agent.INomenclaturalAuthor
+ * @see agent.TeamOrPersonBase#getNomenclaturalTitle()
+ */