Biology:Umbonella sismondae
From HandWiki
Short description: Species of gastropod
| Umbonella sismondae | |
|---|---|
| |
| Original drawing with two views of a shell of Umbonella sismondae | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Vetigastropoda |
| Order: | Trochida |
| Superfamily: | Trochoidea |
| Family: | Trochidae |
| Genus: | Umbonella |
| Species: | U. sismondae
|
| Binomial name | |
| Umbonella sismondae (Issel, 1869)
| |
| Synonyms | |
|
Trochus sismondae Issel, 1869 | |
Umbonella sismondae is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.[1]
Description
The height of the shell attains 4 mm, its diameter also 4 mm. The small, imperforate, greenish shell has a conoid shape. It contains minute, transverse striae. The apex is obtuse. The 41⁄2 whorls increase slowly in size. They are slightly convex and have a distinct suture. The body whorl takes up half of the total length. Its base is angulated and shows on its lower parts four concentric ribs. The oblique aperture is subcircular.[2]
Distribution
This species occurs in the Red Sea on coral reefs.
References
Wikidata ☰ Q7881353 entry
 |
