| Synonym | Author | CoL Status | Valid | Synonymy | Combination |
|---|---|---|---|---|---|
| Notosaria nigricans pyxidata | (Watson, 1880) | synonym | No | senior synonym |
new combination |
| Notosaria pyxidata | (Watson, 1880) | accepted name | Yes | senior synonym |
change in rank |
| Pemphixina pyxidata | (Watson, 1880) | synonym | No | senior synonym |
new combination |
| Rhynchonella nigricans var. pyxidata | Watson, 1880 | synonym | No | senior synonym |
original combination |
| Terebratula nigricans var. pyxidata | (Watson, 1880) | synonym | No | senior synonym |
new combination |