| Leprotintinnus Jörgensen, 1900. Several species. |
 |
| Tintinnidium Kent, 1881. Several to many species. |
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| Contents | Classes | Subclasses | Orders | Suborders | Families |
Family TINTINNIDIIDAE Kofoid & Campbell, 1929
| Syn. | Tintinnididae |
Lorica tubular or flaring; collar typically absent; wall gelatinous, with agglutinated particles and spiral structure; found in marine, brackish, and (occasionally) fresh-water habitats; no fossil species known (to date).
| Leprotintinnus Jörgensen, 1900. Several species. |
|
| Tintinnidium Kent, 1881. Several to many species. |
|