Periplomatidae
Periplomatidae is a family of large marine bivalves of the Anomalodesmata order.- Halistrepta Dall, 1904
- *Halistrepta sulcata – sulcate spoonclam
- Offadesma Dall, 1904
- * Offadesma angasi
- Periploma Schumacher, 1817
- *Periploma abyssorum
- * Periploma affine A. E. Verrill and Bush, 1898 – related spoonclam
- * Periploma alaskanum Williams, 1940
- * Periploma aleuticum – Aleutian spoonclam
- * Periploma anguliferum – angled spoonclam
- * Periploma discus Stearns, 1890 – round spoonclam
- * Periploma fragile – fragile spoonclam
- * Periploma hendrickxi Valentich-Scott & Coan, 2010
- * Periploma kaiserae Valentich-Scott & Coan, 2010
- * Periploma leanum – lea spoonclam, oval spoonclam
- * Periploma margaritaceum – unequal spoonclam
- * Periploma orbiculare
- * Periploma papyratium – paper spoonclam
- * Periploma planiusculum G. B. Sowerby I, 1834 – flat spoonclam
- * Periploma praetenue
- * Periploma skoglundae Valentich-Scott & Coan, 2010
- * Periploma tenerum P. Fischer, 1882 – delicate spoonclam
