| argentina | chubut province | bostrycapulus aculeatus | species | 1 | 0 |
| argentina | rio negro province | bostrycapulus odites | species | 19 | 0 |
| australia | new south wales | bostrycapulus pritzkeri | species | 3 | 0 |
| bahamas | | bostrycapulus aculeatus | species | 2 | 0 |
| brazil | sao paulo | bostrycapulus odites | species | 832 | 0 |
| canada | british columbia | calyptraea fastigata | species | 8 | 0 |
| canada | british columbia | crepidula adunca | species | 41 | 0 |
| canada | british columbia | crepidula norrisiarum | species | 19 | 0 |
| canada | british columbia | crepidula williamsi | species | 5 | 0 |
| canada | british columbia | crepipatella lingulata | species | 22 | 0 |
| canada | new brunswick | crepidula fornicata | species | 10 | 0 |
| canada | new brunswick | crepidula plana | species | 1 | 0 |
| cape verde | | crepidula tegulicia | species | 2 | 0 |
| el salvador | san salvador department | bostrycapulus urraca | species | 6 | 0 |
| france | bretagne region | crepidula fornicata | species | 1 | 0 |
| germany | lower saxony | crepidula fornicata | species | 6 | 0 |
| guam | | bostrycapulus calyptraeformis | species | 2 | 0 |
| japan | nagasaki prefecture | bostrycapulus gravispinosus | species | 2 | 0 |
| mexico | baja california sur | bostrycapulus latebrus | species | 2 | 0 |
| mexico | campeche | crepidula aff. depressa | species | 87 | 0 |
| mexico | campeche | crepidula depressa | species | 2 | 0 |
| mexico | nuevo leon | crepidula aff. depressa | species | 3 | 0 |
| panama | | bostrycapulus calyptraeformis | species | 13 | 0 |
| panama | | bostrycapulus urraca | species | 1 | 0 |
| panama | | crepidula cerithicola | species | 1 | 0 |
| panama | chiriqui province | bostrycapulus calyptraeformis | species | 2 | 0 |
| panama | chiriqui province | bostrycapulus urraca | species | 6 | 0 |
| panama | los santos province | bostrycapulus calyptraeformis | species | 2 | 0 |
| panama | los santos province | bostrycapulus urraca | species | 1 | 0 |
| panama | veraguas province | bostrycapulus urraca | species | 4 | 0 |
| peru | | bostrycapulus calyptraeformis | species | 7 | 0 |
| peru | | crepidula excavata | species | 2 | 0 |
| peru | piura region | bostrycapulus calyptraeformis | species | 1 | 0 |
| portugal | aveiro district | crepidula fornicata | species | 1 | 0 |
| south africa | | bostrycapulus odites | species | 4 | 0 |
| spain | | bostrycapulus odites | species | 3 | 0 |
| spain | | crepidula fornicata | species | 3 | 0 |
| spain | | crepipatella dilatata | species | 2 | 0 |
| sweden | varmland | crepidula fornicata | species | 1 | 0 |
| united states | alaska | crepidula williamsi | species | 4 | 0 |
| united states | california | crepidula adunca | species | 8 | 0 |
| united states | california | crepidula norrisiarum | species | 8 | 0 |
| united states | florida | bostrycapulus aculeatus | species | 6 | 0 |
| united states | florida | crepidula convexa | species | 1 | 0 |
| united states | florida | crepidula fornicata | species | 15 | 0 |
| united states | hawaii | bostrycapulus calyptraeformis | species | 2 | 0 |
| united states | illinois | crepidula atrasolea | species | 3 | 0 |
| united states | maine | crepidula fornicata | species | 4 | 0 |
| united states | maine | crepidula plana | species | 2 | 0 |
| united states | massachusetts | crepidula fornicata | species | 5 | 0 |
| united states | mississippi | crepidula depressa | species | 2 | 0 |
| united states | new hampshire | crepidula fornicata | species | 2 | 0 |
| united states | new york | crepidula convexa | species | 1 | 0 |
| united states | north carolina | crepidula fornicata | species | 3 | 0 |
| united states | virginia | crepidula convexa | species | 3 | 0 |
| united states | virginia | crepidula fornicata | species | 9 | 0 |
| united states | virginia | crepidula plana | species | 8 | 0 |
| united states | washington | crepidula adunca | species | 4 | 0 |