Čeleď: Hemiodontidae Bleeker, 1859 — polozubkovití
Rod: Hemiodus Müller, 1842
Jižní Amerika: horní povodí Rio Tapajós (Mato Grosso, Brazílie).
Rio Claro or Rio Água Verde, circa 12 km SE of São José do Rio Claro on road MT-010 towards Diamantino, São José do Rio Claro, Mato Grosso, Brazil, 13°30'12"S, 56° 37'08"W.
Nogueira, A. F., Langeani, F. & Netto-Ferreira, A. L. 2019. Hemiodus bimaculatus, a new species of Hemiodontidae from the Rio Tapajós drainage, Brazil (Ostariophysi: Characiformes). Journal of Fish Biology v. 94 (no. 5): 798-803.
Fricke, R., Eschmeyer, W. N. & Van der Laan, R. (eds). 2024. Eschmeyer's catalog of fishes: Genera, species, references. World Wide Web.