Eulimastoma didymum
| Eulimastoma didymum | |
|---|---|
| Shell of Eulimastoma didymum, original illustration from Verrill & Bush (1900). | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Family: | Pyramidellidae |
| Genus: | Eulimastoma |
| Species: | E. didymum
|
| Binomial name | |
| Eulimastoma didymum (Verrill & Bush, 1900)
| |
| Synonyms[1] | |
| |
Eulimastoma didymum is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.[1][2]
Description
The shell is minute, white, and subovate, reaching about 1.3 mm in length and approximately 0.7 mm in width. It consists of five teleoconch whorls in addition to a small, slightly projecting and upturned protoconch. The whorls of the spire are strongly flattened and weakly concave medially.[3]
The suture is deeply impressed and weakly canaliculate, bordered by two thickened, rounded spiral cingula, one above and one below the suture. On the body whorl, a distinct spiral groove occurs below the peripheral cingulum and is bordered anteriorly by an additional spiral ridge. The base is short and only slightly produced, with a small spiral rib in the umbilical region.[3]
The aperture is small, broadly ovate, and slightly expanded anteriorly.[3]
Taxonomy
The species was originally described by Verrill and Bush (1900) as Odostomia (Cyclodostomia) didyma, based on a single specimen recovered from shell sand. Subsequent taxonomic revisions transferred the species to the genus Eulimastoma, and the original combinations are now treated as unaccepted superseded combinations.[3]
Distribution
This species occurs in the following locations:[1]
References
- ^ a b c "WoRMS - World Register of Marine Species - Eulimastoma didymum (A. E. Verrill & K. J. Bush, 1900)". www.marinespecies.org. Retrieved 5 February 2026.
- ^ Rosenberg, G., F. Moretzsohn, and E. F. García. 2009. Gastropoda (Mollusca) of the Gulf of Mexico, Pp. 579–699 in Felder, D.L. and D.K. Camp (eds.), Gulf of Mexico–Origins, Waters, and Biota. Biodiversity. Texas A&M Press, College Station, Texas.
- ^ a b c d Verrill, A. E.; Bush, K. J. (1900). "XII. Additions to the Marine Mollusca of the Bermudas". Transactions of the Connecticut Academy of Arts and Sciences. X. New Haven: Published by the Academy: The Tuttle, Morehouse, & Taylor Co.: 533.
External links