Sous-embranchement (subphylum) des Linguliformea
Classe des Lingulata
Ordre des Lingulida
Super-famille des Discinoidea
Famille des Discinidae


Genus Discradisca Stenzel, 1964
[Type species= Orbicula antillarum d'Orbigny, 1846]

Similar to Discinisca but with wide, transversely suboval pedicle track, closed apically by semicircular, gently concave listrium; ornamentation of fine costellae and growth lamellae.

- Nota: This is not a valid diagnosis according to the International Code of Zoological Nomenclature - consequently a new diagnosis as well as for the extant species is in preparation -

Lower Tertiary (Danian) - Present

Diagnosis from volume 2 of the
Treatise on Invertebrate Paleontology

Extant Species of Discradisca
  • D. antillarum (d'Orbigny, 1853)
  • D. cumingii (Broderip, 1833)
  • D. strigata (Broderip, 1833)
  • D. stella (Gould, 1862)
  • D. sparselineata (Dall, 1920)
  • D. indica (Dall, 1920)
  • Diagnosis


    Discradisca antillarum   (d'Orbigny, 1853)

    Type locality: Cuba
    Depth range: xx m

    Diagnosis in preparation -


    Discradisca cumingii   (Broderip, 1833)

    Type locality: “ad Paytam Peruviae, ad Sanctam Elenam, et ad Panamani… and in some instances at a depth of six fathoms” [20 m].
    Depth range: 11 - 53 m.

    Orbicula cumingii Broderip, 1833 (pp. 124-125)
    Discina cumingi: Suess (1859)
    Discinisca cumingii: Davidson (1888)
    Discradisca cuminghii: Gaspard (2001)

    Diagnosis in preparation -


    Discradisca stella   (Gould, 1862)

    Type locality: Hong-Kong (China)
    Depth range: xx m

    Discinisca kiensis Jackson & Stiasny, 1937

    Diagnosis in preparation -