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Feldmann, R.M. and Schweitzer, C.E. 2018. Treatise Online no. 106: Part R, Revised, Volume 1, Chapter 8T1: Systematic descriptions: Superfamily Retroplumoidea Gill, 1894. Treatise Online. (Jan. 2018). DOI:https://doi.org/10.17161/to.v0i0.7604.