Tjaernoeia

Tjaernoeia is a genus of sea snails, marine gastropod mollusks in the informal group Lower Heterobranchia.

Tjaernoeia is the only genus in the family Tjaernoeiidae.

Species
Species in the genus Tjaernoeia include:
 * Tjaernoeia boucheti Warén, 1991 - from deep water in the northeastern Atlantic
 * Tjaernoeia exquisita (Jeffreys, 1883) - described from Crete, also known from Ghana
 * Tjaernoeia michaeli Engl, 2002
 * Tjaernoeia unisulcata (Chaster, 1897)