Anatoma amoena

Anatoma amoena
Shell of Anatoma amoena (specimen at the Smithsonian Institution)
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Vetigastropoda
Order:	Lepetellida
Family:	Anatomidae
Genus:	Anatoma
Species:	A. amoena
Binomial name
Anatoma amoena (Thiele, 1912)
Synonyms [1]
Schizotrochus amoenus(Thiele, 1912) superseded combination Scissurella amoenaThiele, 1912 (basionym) Thieleella amoena(Thiele, 1912)

Anatoma amoena is a species of sea snail, a marine gastropod mollusk in the family Anatomidae. ^[1]

Description

The shell grows to a length of 3.5 mm.

(Original description in German) The shell's form closely resembles Anatoma alta (R. B. Watson, 1886), though it's notably larger, measuring about 3.5 mm in both height and diameter. Of its 4.5 whorls, the first two are flat. The subsequent whorls descend distinctly and are clearly convex at the top, with the broad slit band lying above the suture. The body whorl is also convex below, placing the slit band fairly in the middle. Both the upper and under sides are sculpted with rather strong, curved radial ribs and weaker spiral ridges. The umbilicusis moderately wide, partly covered by the columellar margin, and the apertureis fairly round. ^[2]

Distribution

This species occurs in the Weddell Sea, Antarctica.

References

1. Anatoma amoena (Thiele, 1912) . Retrieved through: World Register of Marine Species  on 12 November 2012.
2. Thiele, J. (1912). "Die antarktischen Schnecken und Muscheln. Deutsche Südpolar-Expedition, 1901-1903, im Auftrage des Reichsamtes des Innern. Wissenschaftliche Ergebnisse. 13". Zoologie. 5 (2): 187. Retrieved 12 July 2025. This article incorporates text from this source, which is in the public domain .

• Zelaya D.G. & Geiger D.L. (2007). Species of Scissurellidae and Anatomidae from Sub-Antarctic and Antarctic waters (Gastropopda: Vetigastropoda). Malacologia 49(2):393–443.
• Geiger D.L. & Marshall B.A. (2012) New species of Scissurellidae, Anatomidae, and Larocheidae (Mollusca: Gastropoda: Vetigastropoda) from New Zealand and beyond. Zootaxa 3344: 1–33