| Intro | | Search taxa | | Taxon tree | | Search literature | | Taxon match | | Homonyms | | Statistics | | Webservice | | Manual | | FAQ | | LifeWatch | | Download | | Log in |
IRMNG taxon detailsCylichnium Dall, 1908
Volvulopsis Schepman, 1913 · unaccepted (synonym)
marine,
recent only
Bull. Mus. comp. Zool. Harvard, 43 (6)
page(s): 242 [details]
Taxonomic remark From Oskars et al., 2019: Cylichnium was initially described as a subgenus of Cylichnella Gabb, 1873 (Cylichnidae). Later,...
Taxonomic remark From Oskars et al., 2019: Cylichnium was initially described as a subgenus of Cylichnella Gabb, 1873 (Cylichnidae). Later, the genus was assigned to Haminoeidae by authors such as Thiele (1931), Wenz (1938), Zilch (1960) and Nordsieck (1972). The latter authors did not mention a specific reason, but Thiele (1931) referred the similarities to the radula to Haminoea (as Haminea). Later, Bouchet (1975), Valdés (2008) and Valdés and McLean (2015), on the basis of internal anatomy, suggested Cylichnium to be likely to belong in Scaphandridae. However, despite the similarly of large and heavy shell, Cylichnium also differs notably from Scaphander by having a narrower shell and possessing a wider radula with numerous lateral teeth (similar to Haminoeidae; see Valdés 2008; Valdés and McLean 2015). These conflicting characters seem to be reflected in our molecular phylogenetic analyses, in which we have included three species of Cylichnium (Fig. 3, Table 2). They all clustered together but separate from Haminoeidae and Scaphandridae. Most likely, Cylichnium warrants its own familial assignment. [details]
IRMNG (2024). Cylichnium Dall, 1908. Accessed at: https://irmng.org/aphia.php?p=taxdetails&id=1008803 on 2024-10-27
Date action by 2016-11-22 07:44:35Z changed db_admin
original description
Bull. Mus. comp. Zool. Harvard, 43 (6)
page(s): 242 [details] basis of record Neave, S. A. and successors. (1939-2004). Nomenclator Zoologicus, vols. 1-10 online. [developed by uBio, hosted online at MBLWHOI Library]. Previously at http://ubio.org/NomenclatorZoologicus/ (URL no longer current). , available online at https://insecta.bio.spbu.ru/z/nomenclator_zoologicus_PDF.htm [details] basis of record SN2000/Bouchet et al., 2001 [details] verified source for family Oskars, T. R.; Too, C. C.; Rees, D.; Mikkelsen, P. M.; Willassen, E.; Malaquias, M. A. E. (2019). A molecular phylogeny of the gastropod family Haminoeidae sensu lato (Heterobranchia: Cephalaspidea): a generic revision. <em>Invertebrate Systematics.</em> 33(2): 426-472., available online at https://doi.org/10.1071/is18051 [details] name verified source Neave, S. A. and successors. (1939-2004). Nomenclator Zoologicus, vols. 1-10 online. [developed by uBio, hosted online at MBLWHOI Library]. Previously at http://ubio.org/NomenclatorZoologicus/ (URL no longer current). , available online at https://insecta.bio.spbu.ru/z/nomenclator_zoologicus_PDF.htm [details] extant flag source SN2000/Bouchet et al., 2001 [details] habitat flag source Aphia 2006 [details] original description (of Volvulopsis Schepman, 1913) Siboga-Exp., Monogr. 49 (f), Prosobranchia, pt. 6 page(s): 463 [details] Unreviewed
Taxonomic remark From Oskars et al., 2019: Cylichnium was initially described as a subgenus of Cylichnella Gabb, 1873 (Cylichnidae). Later, the genus was assigned to Haminoeidae by authors such as Thiele (1931), Wenz (1938), Zilch (1960) and Nordsieck (1972). The latter authors did not mention a specific reason, but Thiele (1931) referred the similarities to the radula to Haminoea (as Haminea). Later, Bouchet (1975), Valdés (2008) and Valdés and McLean (2015), on the basis of internal anatomy, suggested Cylichnium to be likely to belong in Scaphandridae. However, despite the similarly of large and heavy shell, Cylichnium also differs notably from Scaphander by having a narrower shell and possessing a wider radula with numerous lateral teeth (similar to Haminoeidae; see Valdés 2008; Valdés and McLean 2015). These conflicting characters seem to be reflected in our molecular phylogenetic analyses, in which we have included three species of Cylichnium (Fig. 3, Table 2). They all clustered together but separate from Haminoeidae and Scaphandridae. Most likely, Cylichnium warrants its own familial assignment. [details]
|
