A molecular phylogenetic study of the scrubwrens and mouse-warblers published in 2018 led to a revision of the taxonomic classification. The genus Origma had previously contained only a single species, the rockwarbler, but in the reorganisation two additional species from the genus Crateroscelis were added. The rockwarbler diverged from the common ancestor of the other two species—the mousewarblers of New Guinea—around 9 million years ago.[2][3]
↑"Acanthizidae". aviansystematics.org. The Trust for Avian Systematics. Retrieved 2023-07-16.
↑Norman, J.A.; Christidis, L.; Schodde, R. (2018). "Ecological and evolutionary diversification in the Australo-Papuan scrubwrens (Sericornis) and mouse-warblers (Crateroscelis), with a revision of the subfamily Sericornithinae (Aves: Passeriformes: Acanthizidae)". Organisms Diversity & Evolution. 18 (2): 241–259. Bibcode:2018ODivE..18..241N. doi:10.1007/s13127-018-0364-8. S2CID46967802.
