Cirrus acutus- Euomphalus anticostiensis
- Euomphalus carbonarius
- Euomphalus catilliformis
- Euomphalus catillus
- Euomphalus eurekensis
- Euomphalus exiguus
- Euomphalus kaibabensis
- Euomphalus latus
- Euomphalus luxus
- Euomphalus macrolineatus
- Euomphalus michleranus
- Euomphalus nitidulus
- Euomphalus nodocarinatus
- Euomphalus ophirensis
- Euomphalus parvus
- Euomphalus pentangulatus
- Euomphalus planodorsatus
- Euomphalus planorbis
- Euomphalus radiatus
- Euomphalus springvalensis
- Euomphalus strongi
- Euomphalus subplanus
- Euomphalus subquadrata
- Euomphalus sulcatus
- Euomphalus sulcifer
- Euomphalus trigonalis
- Euomphalus tuberculatus
- Euomphalus umbilicatus
- Euomphalus utahensis
- Straparollus angularis
- Straparollus cornudanus
- Straparollus pancakensis
- Straparollus pernodosus
- Straparollus similis
- Straparolus triliris