Boyko, C. B. & J. D. Williams. (2021). A review of the genus
Zonophryxus Richardson, 1903 (Crustacea: Isopoda: Dajidae) with recognition of
Colypurus agassizi Richardson, 1905 (Crustacea: Isopoda: Colypuridae) as a synonym of
Zonophryxus similis Searle, 1914 and the requisite sinking of Colypuridae.
Proceedings of the Biological Society of Washington. 134: 243–264.
