Opeatostoma pseudodon, common name the thorn latirus or banded tooth latirus or red footed conch, is a species of predatory sea snail, a marine gastropod mollusk in the family Fasciolariidae, the tulip snails and spindle snails.

[1][2] This species is found on the tropical west coast of North America: in Southern Baja California, from Mexico to Peru, and in the Galápagos.

[3][4][5] Shells of Opeatostoma pseudodon can reach a length of about 29–75 millimetres (1.1–3.0 in).

By means of this long spine or thorn (hence the common name) which grows from the tip of the snail's aperture, they anchor themselves in the sandy and coral rubble substrate.

[6] These snails live under rocks, usually partially buried in coral sand.