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M012318
Thracia papyracea (Poli, 1791)
''
NMW Image No.

Thracia papyracea (Poli, 1791)

Thracioidea : Thraciidae
Tebble name: Thracia phaseolina (Lamarck)
Smith & Heppell name: Thracia phaseolina (Lamarck, 1818)

To size: To 40mm. Shell Structure: Brittle. Equivalve: Inequivalve, RV more convex than LV. Equilateral: Inequilateral, beaks behind midline. Outline: Oval, anterior part longer and higher than posterior and is flared, broadly curving to the ventral margin, which is slightly curved. Posterior is rostrate, truncate.

Sculpture: Concentric lines and ridges covered with fine granulations which are more visible on the posterior and can only be seen at higher magnification. Shell feels smooth except posterior part. Margin: Smooth. Ligament: External and internal: External short, behind beaks; internal thick in a narrow triangular resilifer below external. Hinge: Lithodesma short (deeper than villosiuscula ) in front of ligament but frequently lost. Pallial Musculature: Rounded to below anterior end of resilifer. Not confluent. Periostracum: Light brown to yellow, very thin. Colour: White.



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Distribution & Ecology


Widely distributed from low in the intertidal across the entire shelf. Inhabits sand, muddy sand and muddy gravels. Many records may actually be T. gracilis.

Depth Range
Intertidal
Continental Shelf (to 200m)


Juveniles & Similar Species

Juvenile Description

Key Features & Similar Species

Additional Comments

Thracioidea : Thraciidae

References


Listed are literature citing Thracia papyracea (Poli, 1791). Reference containing the species Type Description is highlighted.
Poli J X 1791. Testacea Utriusque Siciliae eorumque historia et anatome. Vol.1 Parma, Regio Typographeio. 1-74, pls 1-18.
Soot-Ryen T 1941. Northern Pelecypods in the collection of Tromsø Museum I Order Anomalodesmacea Families Pholoadomyidae. Thraciidae and Periplomatidae. Tromsø Museums Arshefter Naturhistorisk Avd. Nr. 17. 61: 1-41, 10 pls.

Resources


Downloads

Weblinks

  • 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.

Record last modified - 15/01/2014