Parathyasira subcircularis (Payne & Allen 1991)
Thyasiroidea : Thyasiridae |
| Tebble name: | n/a |
| Smith & Heppell name: | n/a |
To size: To 8mm. Shell Structure: Thin, fragile. Equivalve: Equivalve. Equilateral: Equilateral. Tumidity: Not inflated. Outline: Ovate-rhomboidal but rather rounded: anterior dorsal margin depressed; Anterior broadly rounded; ventral rounded; posterior margin subtruncate scarcely sinuous; posterior dorsal margin long sloping steeply. Contour: Submarginal sulcus long, edges angled, no auricle; posterior area a little flattened, sulcus very shallow.
Sculpture: Of concentric lines and growth stops; overall with microscopic radiating raised striations that have a slightly granular appearance. Margin: Inner margin smooth. Ligament: External, deeply sunken scarcely visible. Hinge: Hinge plate weak, indistinct cardinal protuberance in RV, corresponding depression in LV. Pallial Musculature: Muscle scars obscure. Periostracum: Thin, pale straw coloured. Colour: Shell white. Additional Characters: 2 demibranchs.
Distribution & Ecology
Depth Range
Bathyal (500 - 2000m)
Abyssal Rise (2000 - 4000m)
Additional Information & Related Species
Key Features & Similar Species
Related Species
Thyasiroidea : Thyasiridae
References
Listed are literature citing Parathyasira subcircularis (Payne & Allen 1991). Reference containing the species Type Description is highlighted.
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Payne C.M. & Allen J.A. 1991. The morphology of deep-sea Thyasiridae (Mollusca: Bivalvia) from the Atlantic Ocean. Philosophical Transactions of the Royal Society of London Series B. 334: 481-566. |
Resources
- Conchological Society
of Great Britain & Ireland
Provides resources for understanding, identifying, recording, and conserving molluscs - CLEMAM
Check List of European Marine Mollusca - MarLIN
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. - BivAToL
- MarBEF
- Malacological Society
- Unitas Malacologica
- Census of Marine Life
- MarBEF
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.
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