original description
Oppenheim P. (1892). Ueber einige Brackwasser- und Binnen-mollusken aus der Kreide und dem Eocän Ungarns. <em>Zeitschrift der Deutschen Geologischen Gesellschaft.</em> 44: 697-818, pls 31-36., available online at https://www.biodiversitylibrary.org/page/43534481
page(s): 795 [details]
From editor or global species database
Grammatical gender Bandel & Riedel (1994) treated Hadraxon as neuter, but Oppenheim (1892) had clearly indicated it as masculine. [details]