Tegillarca granosa

angielskiShell equivalve, thick and solid, ovate, strongly inflated, slightly longer than high and feebly inequilateral. Umbones strongly protruding, cardinal area rather large. About 18 radial ribs (15 to 20) with wide interstices at each valve; ribs stout and distinctly rugose, bearing regular, often rectangular nodules. Periostracum rather thin and smooth. Internal margins with strong crenulations corresponding with the external radial ribs. No byssal gape. Colour: outside of shell white under the yellowish brown periostracum. Inner side white, often tinged yellow towards the umbonal cavity.

• Anadara thackwayi Iredale, 1927
• Anomalocardia pulchella Dunker, 1868
• Arca obessa Kotaka, 1953
• Tegillarca granosa bessalis Iredale, 1939
• Arca corbula Dillwyn, 1817
• Arca granosa kamakuraensis Noda, 1966
• Arca nodulosa Lightfoot, 1786
• Anadara bisenensis Schrenck & Reinhardt, 1938
• Arca granosa Linnaeus, 1758
• Arca aculeata Bruguière, 1789
• Arca corbicula Gmelin, 1791
• Anadara granosa (Linnaeus, 1758)