Pristigloma nitens (Jeffreys, 1876)
Pristiglomoidea : Pristiglomidae
Slightly inequilateral, beaks situated to the anterior of midline, approximately 45% of total length from anterior end.
Sub-circular: width of shell only slightly greater than height. Posterior dorsal margin straight and gently sloping, anterior dorsal margin very short with a sharp angle in front of the umbo. Other margins well rounded. No lunule or escutcheon. Umbo prominent, swollen and raised above the dorsal margin; prodissoconch smooth, conspicuous with defined margin.
Sculpture: Primary sculpture of very fine, regular concentric lines with occasional more prominent growth stops. Also has a sculpture of extremely fine radiating lines. Margin: Smooth. Ligament: Internal, opisthodetic, prominent, elongate, dark brown ligament seated in an elongated groove which runs along the lower part of the posterior hinge plate for about half of its length. Hinge: Taxodont: relatively solid hinge plate separated into 2 distinct parts. Posteriorly the hinge plate is long, relatively narrow and slightly curved, with around 10 slightly raised and pointed chevron-shaped teeth. The anterior part of the hinge plate is short and broad with 4 larger, much less chevron-shaped teeth. Pallial Musculature: Pallial line and muscle scars indistinct. Periostracum: Pale yellowish green with a satiny texture. Colour: Translucent white to bluey grey, inside of shell lustrous. Additional Characters: Four rather elongated loops on either side of the body.
Distribution & Ecology
Found throughout most of the Atlantic deep-sea basins.
Abyssal Rise (2000 - 4000m)
Additional Information & Related Species
Pristiglomoidea : Pristiglomidae
Listed are literature citing Pristigloma nitens (Jeffreys, 1876). Reference containing the species Type Description is highlighted.
Jeffreys J G 1876. Preliminary report of the biological results of a cruise in HMS Valorous to the Davis Straits in 1875. Proceedings of the Royal Society. 25: 177-237, pls2-4.
Olabarria C. 2005. Patterns of bathymetric zonation of bivalves in the Porcupine Sea Bight and adjacent abyssal plain, NE Atlantic. Deep-Sea Research I. 52: 15-31.
Sanders H L & Allen J A 1973. Studies on deep-sea Protobranchia (Bivalvia); prologue and the Pristiglomidae. Bulletin of the Museum of Comparative Zoology, Harvard. 145: 237-262.
- Conchological Society
of Great Britain & Ireland
Provides resources for understanding, identifying, recording, and conserving molluscs
Check List of European Marine Mollusca
The Marine Life Information Network for Britain and Ireland (MarLIN) provides information for marine environmental management, protection and education. It is a centre of excellence in spatially based and time-series marine biological information and supports good stewardship in the marine environment.
- NBN Gateway
National Biodiversity Network's Gateway. Use it to explore UK biodiversity data, as contributed by participating data providers.
- Malacological Society
- Unitas Malacologica
- Census of Marine Life
MarBEF, a network of excellence funded by the European Union and consisting of 94 European marine institutes, is a platform to integrate and disseminate knowledge and expertise on marine biodiversity, with links to researchers, industry, stakeholders and the general public.