Discradisca 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 Diagnosis Diagnosis Diagnosis

FIGURES : Discradisca      Geographic distribution

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: 0 - 15 m Discina stella Gould, 1862 Discinisca stella : Dall (1920) Discinisca kiensis Jackson & Stiasny, 1937 Diagnosis in preparation -
Discradisca sparselineata   (Dall, 1820) Type locality: Gulf of Tokyo (Japan) Depth range: 0 - 21 m Discinisca sparselineata Dall, 1920, p. 279. Discinisca stella Davidson, 1888 (ex parte), p. 204. Discinisca sparselineata : Hatai, 1940, p. 187. Diagnosis in preparation -