Resolving phylogenetic and classical nomenclature: A revision of Seraphsidae Jung, 1974 (Gastropoda: Neostromboidae) Author Maxwell, Stephen J. 0000-0002-4328-6171 College of Science and Engineering, James Cook University, P. O. Box 6811, Cairns, Queensland 4870, Australia. & Stephen. maxwell @ my. jcu. edu. au; https: // orcid. org / 0000 - 0002 - 4328 - 6171 tephen.maxwell@my.jcu.edu.au Author Rymer, Tasmin L. 0000-0002-9963-6345 College of Science and Engineering, James Cook University, P. O. Box 6811, Cairns, Queensland 4870, Australia. & Centre for Tropical Environmental and Sustainability Sciences, James Cook University, P. O. Box 6811, Cairns, Queensland 4870, Australia. & Tamsin. rymer @ jcu. edu. au; https: // orcid. org / 0000 - 0002 - 9963 - 6345 amsin.rymer@jcu.edu.au Author Congdon, Bradley C. 0000-0002-8751-0892 College of Science and Engineering, James Cook University, P. O. Box 6811, Cairns, Queensland 4870, Australia. & Centre for Tropical Environmental and Sustainability Sciences, James Cook University, P. O. Box 6811, Cairns, Queensland 4870, Australia. & brad. congdon @ jcu. edu. au; https: // orcid. org / 0000 - 0002 - 8751 - 0892 brad.congdon@jcu.edu.au text Zootaxa 2021 2021-06-22 4990 3 401 453 journal article 5563 10.11646/zootaxa.4990.3.1 6a6dd89d-6b74-47ed-ba8e-71b526355b69 1175-5326 5026777 70610FEE-4497-4804-817C-CEC2D66DDBFE Diameza fragilis ( Defrance, 1825 ) Figure 6A 1803 Rostellaria macroptera Lamarck , p. 220, pl. 4, figs. 5a–c. 1825 Ovula fragilis Defrance , p. 132. Pacaud 2008 , p. 722 . = Seraphs ( Diameza ) fragilis Le Renard — Caze et al. 2010 , p. 446 . = Diameza ( Diameza ) fragilis Defrance — Caze et al. 2010 , p. 446 , figs. 20A–E, 21. 1837 Ovula intermedia Deshayes , p. 718, pl. 95, figs. 34—36. Jung 1974 , p. 32 . Pacaud 2008 , p. 722 . = Seraphs ( Diameza ) intermedius Deshayes — Jung 1974 , p. 32 , tfs. 20, 22–25. Caze et al. 2010 , p. 446 . = Seraphs intermedius Deshayes — Bandel 2007 , p. 137 . 1865 Ovula media Deshayes , p. 572. de Gregorio 1880 , p. 27 . Jung 1974 , p. 32 . Bandel 2007 , p. 138 . Caze et al. 2010 , p. 446 . = Diameza media Deshayes, 1865 , p. 572 . Cossmann 1889 , p. 95 . = Terebellum ( Diameza ) medium Wenz — Caze et al. 2010 , p. 446 . = Terebellum ( Diameza ) media Deshayes — Cossmann 1904 , pp. 47, 48, pl. 3, figs. 9–12. Jung 1974 , p. 32 . Caze et al. 2010 , p. 446 . = Seraphs medium Deshayes — Bandel 2007 , p. 137 . 1880 Diameza deshayesi de Gregorio , p. 25, pl. VI, fig. 8. Jung 1974 , p. 33 . Quaggioto & Mellini 2008, p. 48, pl. VI, fig. 8. Type material. Neotype — MNHN A28939 was designated by Caze et al. (2010) to replace the the original lost syntype , as well as a lost lectotype designated by Jung (1974) . The lost type of Jung measured 6.9 mm in length and 3.8 mm in width ( Jung 1974 ). Type locality. Villiers-Saint-Frédéric, France [Lutetian] . Diagnosis. The shell is inflated and involute. The greatest diameter of the shell is adapical to the middle of the shell. The shell is smooth with only a few oblique grooves near the base of the columella. The parietal callus is weakly developed. The labrum is thickened and sinuous, being protocyrt on the lower half, and opisthocyrt above. The labrum extends past, and covers, the apex. The columella bends backward at the base. Distribution. EOCENE—Lutetian/Bartonian— Italy San Giovanni Ilarione ( de Gregorio 1880 ; Jung 1974 ; Quaggioto & Mellini 2008). Lutetian— France Ferme de l’Orme, Yvelines ( Caze et al. 2010 ); Grignon, Yvelines ( Caze et al. 2010 ); Villiers-St-Frédéric, Yvelines ( Caze et al. 2010 ).