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 Paraseraphs Jung, 1974 [Maxwell, this paper] nomen cladi conversum ( Pseudoterebellinae ) Figure 7 1974 Paraseraphs Jung , p. 33. Bandel 2007 , p. 137 . Caze et al. 2010 , p. 454 . Type . Paraseraphs tetanus Jung, 1974 by original designation ( Jung 1974 , p. 33). RegNum Registration Number. 682. Reference Phylogeny. Figure 3 . Definition. The maximum clade consisting of Paraseraphs tetanus Jung, 1974 and all species that share a more recent common ancestor with it than with Seraphs sopitus ( Brander, 1766 ) , Mauryna plicata ( d’Archiac & Haime, 1853 ) or Terebellum terebellum ( Linnaeus, 1758 ) . Diagnosis. The shell is evolute, cylindrical and smooth, with a posterior canal present. The labrum is protocyrt, with no channelled suture and a maximum diameter near the base. The adapical canal is present, and often extends to the apex. The columella is smooth and bent backward near the base. Composition. Paraseraphs contains ten species detailed herein, and belongs to the Pseudoterebellinae , but excludes Pseudoterebellum and Terebellum . Remarks. The clade Paraseraphs is restricted to the Late Paleocene and the Eocene of the tropical Americas and Europe, where it arose out of the new subfamily Seraphsinae . The greatest diversity occurred during the middle Eocene ( Jung 1974 ; Sepkoski 2002 ; Caze et al. 2010 ; Table 6). Paraseraphs defining characteristics are a posterior canal and evolute growth pattern. Paraseraphs likely shares ancestry with the new genus Pseudoterebellum and Terebellum ( Jung 1974 ) .