Theora is a genus of marine and brackish-water bivalves in the family Semelidae.
Species Species accepted as of September 2026:
Theora alfredensis Theora iridescens Theora lata Theora lubrica Theora mesopotamica Theora moulinsii Theora nasuta Theora opalina Theora translucens
Synonyms Theora cadabra (Eames & Wilkins, 1957) accepted as Theora mesopotamica (Annandale, 1918) (junior synonym) Theora fragilis (A. Adams, 1856) accepted as Theora lata (Hinds, 1843) Theora hindsiana Preston, 1916 accepted as Theora iridescens (Hinds, 1843) Theora nitida Gould, 1861 accepted as Theora lata (Hinds, 1843) Theora ovalis E. A. Smith, 1904 accepted as Aligena ovalis (E. A. Smith, 1904) (original combination)
References
External links
Adams, H. & Adams, A. (1853–1858). The genera of Recent Mollusca; arranged according to their organization. London, van Voorst. Vol. 1: xl + 484 pp.; vol. 2: 661 pp.; vol. 3: 138 pls. Adams, A. (1864). On the species of Nearea found in the seas of Japan. Annals and Magazine of Natural History. (3) 13: 206–209 Stoliczka F. (1870–1871). The Pelecypoda, with a review of all known genera of this class, fossil and recent. [in] T. Oldham, Paleontologia Indica, being figures and descriptions of the organic remains procured during the progress of the Geological Survey of India. Cretaceous Fauna of Southern India. Volume 3. Memoirs of the Geological Survey of India, Calcutta. pp. i–xxii, 1–537, pl. 1–50