Dillwynella
Dillwynella is a genus of sea snails, marine gastropod mollusks in the family Skeneidae.[1]
| Dillwynella | |
|---|---|
 | |
| Apertural view of a shell of Dillwynella modesta | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Clade: | Vetigastropoda |
| Order: | Trochida |
| Superfamily: | Trochoidea |
| Family: | Skeneidae |
| Genus: | Dillwynella Dall, 1889 |
| Type species | |
| Teinostoma (Dillwynella) modesta Dall, 1889 | |
Description
The minute, depressed, porcellanous shell has a thin horny operculum. It consists of comparatively few whorls. The shell is imperforate, but with a depression bounded by a riblet in the umbilical rib outside of the columella. The few whorls have a thin fugacious epidermis. The outer lip is thin . The columella has no teeth, projections, or folds, passing smoothly into the anterior margin.[2]
Species
Species within the genus Dillwynella include:
- † Dillwynella aulacophora Cossmann, 1913 [3]
- Dillwynella fallax Hasegawa, 1997
- Dillwynella haptricola B.A. Marshall, 1988
- † Dillwynella houzeaui Cossmann, 1913 [3]
- Dillwynella ingens B.A. Marshall, 1988
- Dillwynella lignicola B.A. Marshall, 1988
- Dillwynella modesta (Dall, 1889)
- Dillwynella planorbis Hasegawa, 1997
- Dillwynella sheisinmaruae Hasegawa, 1997
- † Dillwynella texana G. Harris, 1895 [4]
- Dillwynella vitrea Hasegawa, 1997[5]
- Dillwynella voightae Kunze, 2011
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References
- Dillwynella . Retrieved through: World Register of Marine Species on 6 October 2011.
- Dall W. H. 1889. Reports on the results of dredging, under the supervision of Alexander Agassiz, in the Gulf of Mexico (1877-78) and in the Caribbean Sea (1879-80), by the U.S. Coast Survey Steamer "Blake", Lieut.-Commander C.D. Sigsbee, U.S.N., and Commander J.R. Bartlett, U.S.N., commanding. XXIX. Report on the Mollusca. Part 2, Gastropoda and Scaphopoda. Bulletin of the Museum of Comparative Zoölogy at Harvard College 18: 1-492, pls. 10-40
- Cossmann (1915), Révision des scaphopodes, gastropodes et céphalopodes du montien de Belgique; Mémoires du Musée Royal d'Histroire Naturelle de Belgique 1913, p. 36
- G. Harris, New and Otherwise Interesting Tertiary Mollusca from Texas; Proceedings of the Academy of Natural Sciences of Philadelphia, Vol. 47, (1895), pp. 45-88
- Dillwynella vitrea Hasegawa, 1997. Retrieved through: World Register of Marine Species on 20 April 2010.
- Kunze T. (2011) Dillwynella voightae new species, a new skeneimorph gastropod (Turbinidae) from the western Atlantic and a new record of Dillwynella modesta (Dall, 1889). The Nautilus 125(1): 36-40.
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