Nerita gouetensis
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Ordo: Cycloneritimorpha
Familia: Neritidae
Genus: Nerita
Name
Nerita gouetensis Symonds, Malcolm Francis, 2010 – Wikispecies link – Pensoft Profile
- Nerita gouetensis Symonds, Malcolm Francis, 2010, Zootaxa 2606: 58-59.
Materials Examined
Type material.Holotype MNHN A 31489 (Pacaud leg., Fig. 2 a–c). Stratum typicum. Late Eocene, Bartonian, “Sands of Bois-Gouët”. Locus typicus. Bois-Gouët, Saffré, Loire-Atlantique, France. 47 ˚ 29 ˏ 9.25 ˝ N 1 ˚ 36 ˏ 45.55 ˝ E.
Etymology
Derivatio nominis. Named after Bois-Gouët, the type locality and the only locality at which this species has, as yet, been found.
Diagnosis
Diagnosis. A small Nerita with prominent, rounded, spiral ribs and a smooth, edentate septum.
Description
Description. Protoconch badly worn in only known specimen. Teleoconch of just over two whorls increasing rapidly in size, earlier rather worn in holotype. Last whorl bears nine prominent, smooth, rounded, spiral ribs, mostly evenly spaced; 6 th and 7 th below suture closer together. Apart from spiral ribs, surface of teleoconch smooth, lacking any collabral ornamentation other than some fine, rather faint growth lines. No colour pattern discernable but brown colour remains between ribs where shell relatively unworn. Slightly worn septum smooth, edge slightly concave, edentate. Outer lip thickened within, smooth apart from small protuberance about 1 mm from adapical end of septum. Gutter at junction of adapical end of septum and outer lip. Apertural tooth prominent, below abapical end of septum, in form of apostrophe with thicker end inward, higher, sloping to tail of apostrophe. Size. The holotype is approximately 4 mm high, and 4 mm wide.
Discussion
Remarks. Nerita (Amphinerita) gouetensis does not fit precisely within any of the generally accepted subgenera of Nerita. Those that share diagnostic characteristics with Na. (A.) gouetensis are:
Taxon Treatment
- Symonds, Malcolm Francis; Pacaud, Jean-Michel; 2010: New species of Neritidae (Neritimorpha) from the Ypresian and Bartonian of the Paris and Basse-Loire Basins, France, Zootaxa 2606: 58-59. doi
This treatment was originally uploaded by Plazi, compare this treatment on Plazi. Unless this treatment has been substantially changed on Species-ID, Plazi requests to maintain a link back to the original repository.
