Tellina angulata   Chemnitz  (Clam)
Organism information awaits expert curation
Class: Bivalvia

Shell large, thin, oblong-ovate frm, with the umbo placed well behind the middle line. Both the anterior and posterior parts of the dorsal margin slope obliquely from the umbo, but the posterior side is much shorter and is more steeply inclined than the anterior; the front margin is broad and rounded while the hind margin is narrower and more truncated.

The shell bears a more convexly raised, oblique radial keel running down from the umbo near the posterior margin, and the slight flexion of the surface of the shell in the region of the keel renders the ventral margin of the shell slightly but distinctly indented at the point of termination of the keel. The concentric growth lines which traverse the surface of the shell are stronger and more well marked over the keel and on the area behind it. The valves are moderately deep and appear most strongly inflated in the region immediately below the umbo; hinge area flattened and triangular and bears only two cardinal teeth, lateral teeth being absent.

The shell is moderately thin smooth and without definite sculpture, apart from the usual growth lines. The inner surface is slightly glossy; pallial sinus is very large, deep and extensive.

Synonym (s)

Common Name (s)
• Paper Shell (English)
Economic Importance and Threats

Habitat:  Estuarine, Coastal


• West Bengal, Digha Coast (Lat: 21.61) (Long: 87.53) INDIA
• Tamil Nadu, Parangipettai Coast (Lat: 11.48) (Long: 79.77) INDIA
• Tamil Nadu, Porto Novo (Lat: 11.48) (Long: 79.77) INDIA

Literature Source(s)
  • Tikadar, BK; Daniel, A and Subbarao, NV (1986) Sea shore animals of Andaman and Nicobar Islands The Director, ZSI, Kolkatta 188 Available at - ZSI, Pune
  • Subba Rao, NV and Dey, A (2000) Catalogue of marine molluscs of Andaman and Nicobar Islands Occasional paper no 187 Records of the Zoological Survey of India ZSI 1-323 Available at - NCL, Pune
  • Venkatraman, K; Srinivasan, M; Satyanarayana, CH and Prabhakar D (2002) Faunal diversity of Gulf of Mannar biosphere reserve Conservation area series 15 ZSI 77 pp; VIII pla Available at - NCL, Pune
  • Shanmugam, A; Rajagopal, S and Nazeer, RA Common bivalves of Parangipettai coast Available at - NIO, Goa
  • Ramakrishna; Sarkar, J and Talukdar, S (2003) Marine invertebrates of Digha coast and some recomendations on their conservation Records of the Zoological Survey of India ZSI, Kolkata 101(3-4) 1 Available at - NCL, Pune
  • Nagabhushanam, AK and Krishnan, S (1993) Observations on the distribution of some of the marine organism inhabiting the inter-tidal zone along the western continental shelf of the Bay of Bengal, with particular reference to the Tamil Nadu coastal strip Records of the Zoological Survey of India 93(3-4) 449-490 Available at - ZSI, Pune
  • Fernando, AS and Fernando, OJ (2002) A field guide to the common invertebrates of the east coast of India Centre of Advanced Study in Marine Biology 1-258 Available at - NIO, RC Kochi
  • Goswami, BCB (1992) Marine fauna of Digha coast of West Bengal, India Journal of Marine Biological Association of India The Marine Biological Association of India, Cochin 34 115-137 Available at - NIO, RC Kochi
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • Jayabal, R and Kalyani, M (1989) Check list of estuarine and marine bivalves of Porto Novo waters Mahasagar NIO, Goa 22(3) 147-150 Available at - NIO,Goa

Page last updated on:2012-01-30

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