Tricornis oldi, common name: Old's Conch, is a species of sea snail, a marine gastropod mollusk in the family Strombidae, the true conchs. Description The shell size varies between 80 mm and 150 mm. Distribution This species is distributed in the Arabian Sea along Oman, and in the Indian Ocean along Somalia. References Walls, J.G. (1980). Conchs, tibias and harps. A survey of the molluscan families Strombidae and Harpidae. T.F.H. Publications Ltd, Hong Kong External links Strombidae Gastropods described in 1965