IRMNG Taxon list
- Actapericulum bicarinatum Holmes, 1995 †
- Faujasia apicalis (Desor, 1847) †
- Faujasia eccentripora Lees †
- Procassidulus malayanus (Mortensen, 1948) † accepted as Procassidulus malayanus Mortensen, 1948 †
- Procassidulus malayanus Mortensen, 1948 †
- Rhynchopygus caribaearum (Lamarck, 1816) † accepted as Cassidulus caribaearum Lamarck, 1801
- Rhynchopygus janchrisorum Holmes, 2004 †
- Rhynchopygus marmini Agassiz †
- Rhynchopygus pacificus (A. Agassiz, 1863) † accepted as Rhyncholampas pacificus (A. Agassiz, 1863)
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