Planitrochidae

Planitrochidae is an extinct family of fossil sea snails, Paleozoic gastropod mollusks.

This family has no subfamilies.

Genera
Genera within the family Planotrochidae include:
 * Horologium
 * Nematrochus
 * Perneritrochus
 * ''Planotrochus, the type genus
 * Trochomphalus