World Register of Marine Species (WoRMS)
MolluscaBase eds. (2026). MolluscaBase. Semitrivia Cossmann, 1903. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=390767 on 2026-08-28
Cossmann, M. (1903). Essais de paléoconchologie comparée. Cinquième livraison. Paris, The author and de Rudeval. 215 pp., 9 pls.