Čeleď: Tetraodontidae Bonaparte, 1831
Rod: Sphoeroides Anonymous [Lacepède], 1798
čtverzubec jižní
Goode, G. B. & T. H. Bean. 1882. Descriptions of twenty-five new species of fish from the southern United States, and three new genera, Letharcus, Ioglossus, and Chriodorus. Proc. U. S. Natl. Mus. v. 5 (no. 297): 412-437.