TYLER, James C. (1980). Osteology, phylogeny, and higher classification of the fishes of the order Plectognathi (Tetraodontiformes). [Seattle, Wash.] : U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, National Marine Fisheries Service. . Cf. https://www.biodiversitylibrary.org/item/128327#page/244/mode/1up.