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Scientific Name: Umbonium vestiarium (Linnaeus, 1758)
English Name: Button top, Vestas Button top
Local/Bangla Name: Chapta shamuk (চ্যাপ্টা শামুক), Pachano shamuk (প্যাচাঁনো শামুক)
Common button top - Not Known - Umbonium vestiarium - Type: Zooplankton

Photo: GBIF

Classification:
Kingdom: Animalia
Phylum: Mullusca
Class: Gastropoda
Order: Trochida
Family: Trochidae
Description:
The shell is compact and dense, appearing flattened and lens-shaped, with a width significantly surpassing its length. It boasts a smooth and glossy surface. The spire is short, slightly convex, with whorls that overlap slightly, and the juncture between them appears like a floating suture. The base is flat, featuring a rounded and angular body whorl. The umbilicus is sealed by a sizable, almost circular callus pad. The aperture takes on a round or egg-like shape, with a sharp outer lip and a smooth interior. The columella is smooth and curves strongly forward, while the operculum is circular in form
Habitat & Distribution in Bangladesh:
Coxs Bazar and Teknaf sea beach, Sonadia and St. Martin’s islands, and Nuniarchar (Cox’s Bazar)
Environment:
Marine
Main References:

Siddiqui KU, Islam MA, Kabir SMH, Ahmad M, Ahmed ATA, Rahman AKA, Haque EU, Ahmed ZU, Begum ZNT, Hassan MA, Khondker M, Rahman MM (2007) Encyclopedia of Flora and Fauna of Bangladesh, Vol. 17. Molluscs. Asiatic Society of Bangladesh, Dhaka 415 pp.

Other References:

Hossain MS, Sharifuzzaman SM, Chowdhury SR, Chowdhury MSN, Sarkar S, Islam MR and Talukder A (2014) Sea Shells of Bangladesh: Marine Gastropod and Bivalve Molluscs Biodiversity.1-44pp

Antu DR, Islam TT, Ahmed MR, Ahmed S, Datta SK, Ahmed MS (2023) Diversity of Bivalves and Gastropods in Sonadia Island, Bangladesh. Bioresearch Communications-(BRC), 9(01), 1225-1236. https://doi.org/10.3329/brc.v9i1.63603

DNA Barcodes from Bangladesh
GenBank Accession Number:
Other DNA Barcodes & Nucleutide Sequences
IUCN conservation status:
Other Information