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Scientific Name: Rochia nilotica (Linnaeus, 1767)
Synonym: Trochus niloticus (Currently unaccepted)
English Name: Commercial top, Button shell
Local/Bangla Name: Pahar shamuk (পাহাড় শামুক), Shanko shamuk (শঙ্ক শামুক)
Photo: Kristof Zyskowski (GBIF)
Classification:
Kingdom: Animalia
Phylum: Mullusca
Class: Gastropoda
Order: Trochida
Family: Tegulidae
Description:
The shell is sizable, weighty, and robust, taking on a conical shape with a length approximately equal to its width. The apex tapers to a point, and the initial whorls of the early spire exhibit noticeable tubercles just above the sutures. In larger specimens, the body whorl is smooth, with a concave upper portion, while the lower part protrudes, forming an acutely rounded and thickened periphery. The base is flat and marked with numerous shallow spiral ridges. The umbilicus is excavated and partially filled with a spiral ridge along the columella. The aperture is square in shape, broader than it is tall
Habitat & Distribution in Bangladesh:
St. Martin’s Island
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.
DNA Barcodes from Bangladesh
GenBank Accession Number:
Other DNA Barcodes & Nucleutide Sequences
IUCN conservation status:
Other Information
