| Name | Children | Media (from resource) | Traits |
|---|---|---|---|
| Argyrotheca Dall 1900 | 0 | 0 | 1 |
| Argyrotheca cuneata (Risso 1826) | 0 | 0 | 2 |
| Argyrotheca jacksoni Cooper 1973 | 0 | 0 | 2 |
| Argyrotheca johnsoni Cooper 1934 | 0 | 0 | 2 |
| Argyrotheca rubrocostata Cooper 1977 | 0 | 0 | 2 |
| Argyrotheca schrammi (Crosse & Fischer 1866) | 0 | 0 | 2 |
| Brachiopoda (Lonkerojalkaiset) | 0 | 0 | 1 |
| Gwynia King 1859 | 0 | 0 | 2 |
| Joania Alvarez, Brunton & Long 2008 | 0 | 0 | 2 |
| Joania cordata (Risso 1826) | 0 | 0 | 3 |
| Megathiris detruncata (Gmelin 1791) | 0 | 0 | 2 |
| Minutella minuta (Cooper 1981) | 0 | 0 | 2 |
| Platidia anomioides (Scacchi & Philippi ex Philippi 1844) | 0 | 0 | 1 |
| Pumilus antiquatus Atkins 1958 | 0 | 0 | 1 |
| Thecidellina barretti (Davidson 1864) | 0 | 0 | 2 |
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