| Scientific Name | TSN | Taxon Author | Common Name | Name Source | Usage | Reason (ITIS) | Taxon Rank |
|---|
| Chlamydoconchidae | 80705 | Dall, 1889 | | ITIS | invalid | junior synonym of Galeommatidae | Family |
| Erycinidae | 80607 | Deshayes, 1850 | | ITIS | invalid | junior synonym of Lasaeidae | Family |
| Galeommatidae | 80700 | Gray, 1840 | | ITIS | valid | | Family |
| Kelliidae | 80620 | Forbes and Hanley, 1848 | | ITIS | invalid | junior synonym of Lasaeidae | Family |
| Lasaeidae | 81679 | Gray, 1847 | | ITIS | valid | | Family |
| Laseadae | 80608 | Gray, 1847 | | ITIS | invalid | unavailable, literature misspelling of Lasaeidae | Family |
| Leptonidae | 80633 | Gray, 1847 | | ITIS | valid | | Family |
| Montacutidae | 80650 | Clark, 1855 | | ITIS | invalid | junior synonym of Lasaeidae | Family |
