 This suggests the original split was only very recent as the forms had insufficient time to speciate.Further molecular studies may result in this hypothesis being modified.A 2017 genetic study using both mitochondrial and nuclear DNA found the ancestors of the superb and splendid fairywrens diverged from each other around 4 million years ago, and their common ancestor diverged around 7 million years ago from a lineage that gave rise to the white-shouldered, white-winged and red-backed fairywrens.