Turbonilla nanseni Lygre & Kongsrud & Schander 2011, sp. n. ...

• Main Authors: Lygre, Frøydis, Kongsrud, Jon Anders, Schander, Christoffer
• Format: Text
• Language: unknown
• Published: Zenodo 2011
• Subjects: Biodiversity; Taxonomy; Animalia; Mollusca; Gastropoda; Littorinimorpha; Pyramidellidae; Turbonilla; Turbonilla nanseni; Fridtjof; Fridtjof Nansen
• Online Access: https://dx.doi.org/10.5281/zenodo.7921002; https://zenodo.org/record/7921002

Turbonilla nanseni sp. n. Fig. 2 Etymology: This species is named in honour of the research vessel R/V Dr Fridtjof Nansen, used for the collection of all the material used in this study (http://www.imr. no/om_havforskningsinstituttet/fasiliteter/fartoy/dr._fridtjof_nansen/en). Diagnosis: Tall, high spired with large protoconch, convex whorls, and strong axial ribs crossed by microstriae. Description: Shell tall, slender, conical towards subcylindrical, milky white and shiny with rounded apex. Protoconch of type A-II, diameter 380 μm, protruding nucleus. Teleoconch whorls slightly convex. Suture incised, not deep, slightly undulating, noticeably oblique. Axial ribs not very elevated, thin, straight or slightly curved, opisthocline; closely set, broader than interspaces; disappearing at periphery of ultimate whorl. Base smooth. Microsculpture of undulating spiral striae in interspaces and on ribs. Aperture subrectangular. Inner lip slightly folded. Columellar tooth absent. No umbilicus. Holotype: GABON:station ... : Published as part of Lygre, Frøydis, Kongsrud, Jon Anders & Schander, Christoffer, 2011, Four new species of Turbonilla (Gastropoda, Pyramidellimorpha, Turbonillidae) from the Gulf of Guinea, West Africa, pp. 243 in African Invertebrates 52 (2) on page 247, DOI: 10.5733/afin.052.0202, http://zenodo.org/record/7917236 ...