(ofOrthonematidae Nützel & Bandel, 2000 †)Nützel, A., Bandel, K. (2000). Goniasmidae and Orthonemidae: two new families of the Palaeozoic Caenogastropoda (Mollusca, Gastropoda). <em>Neues Jahrbuch für Geologie und Paleontologie, Monatshefte.</em> 2000(9): 557−569., available online athttps://doi.org/10.1127/njgpm/2000/2000/557 page(s): 560, 561; note: as Orthonemidae [details]
MolluscaBase eds. (2025). MolluscaBase. Orthonematoidea Nützel & Bandel, 2000 †. Accessed through: Marine Species Traits editorial board (2025) Marine Species Traits at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=933009 on 2026-08-20
Marine Species Traits editorial board (2026). Marine Species Traits. Orthonematoidea Nützel & Bandel, 2000 †. Accessed at: https://marinespecies.org/traits/aphia.php?p=taxdetails&id=933009 on 2026-08-20
original description(ofOrthonematidae Nützel & Bandel, 2000 †)Nützel, A., Bandel, K. (2000). Goniasmidae and Orthonemidae: two new families of the Palaeozoic Caenogastropoda (Mollusca, Gastropoda). <em>Neues Jahrbuch für Geologie und Paleontologie, Monatshefte.</em> 2000(9): 557−569., available online athttps://doi.org/10.1127/njgpm/2000/2000/557 page(s): 560, 561; note: as Orthonemidae [details]