Peasiella isseli
(Redirected from Umbonella sismondae)
| Peasiella isseli | |
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Littorinimorpha |
| Family: | Littorinidae |
| Genus: | Peasiella |
| Species: | P. isseli
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| Binomial name | |
| Peasiella isseli (Issel, 1869)
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| Synonyms[1] | |
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List
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Peasiella isseli is a species of sea snail, a marine gastropod mollusk in the family Littorinidae, the winkles or periwinkles.[1]
Description
[edit]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
[edit]This species occurs in the Red Sea on coral reefs.
References
[edit]- ^ a b "WoRMS - World Register of Marine Species - Peasiella isseli (Issel, 1869)". www.marinespecies.org. Retrieved 14 July 2023.
- ^ Issel A. (1869), Malacologia del Mar Rosso : ricerche zoologiche e paleontologiche / di Arturo Issel ; memoria letta al congresso dei Naturalisti Italiani in Vicenza nel 1868
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