| Nominal Species (n = 21) | Present allocation (n = 18) | Ref. |
|---|---|---|
| Cephalodiscus aequatus Andersson, 1907 | Cephalodiscus hodgsoni | 19 |
| Cephalodiscus agglutinans Harmer & Ridewood, 1914 | Cephalodiscus agglutinans | 19 |
| Cephalodiscus anderssoni Gravier, 1912 | Cephalodiscus densus | 19 |
| Cephalodiscus atlanticus Bayer, 1962 | Cephalodiscus atlanticus | 19 |
| Cephalodiscus calciformis Emig, 1977 | Cephalodiscus calciformis | 19 |
| Cephalodiscus densus Andersson, 1907 | Cephalodiscus densus | 19 |
| Cephalodiscus dodecalophus McIntosh, 1882 | Cephalodiscus dodecalophus | 19 |
| Cephalodiscus evansi Ridewood | Cephalodiscus evansi | 19 |
| Cephalodiscus fumosus John, 1932 | Cephalodiscus fumosus | 19 |
| Cephalodiscus gilchristi Ridewood, 1908 | Cephalodiscus gilchristi | 19 |
| Cephalodiscus gracilis Harmer, 1905 | Cephalodiscus gracilis | 19 |
| Cephalodiscus graptolitoides Dilly, 1993 | Cephalodiscus graptolitoides | 19 |
| Atubaria heterolopha Sato, 1935 | Atubaria heterolopha | 19 |
| Cephalodiscus hodgsoni Ridewood, 1907 | Cephalodiscus hodgsoni | 19 |
| Cephalodiscus inaequatus Andersson, 1907 | Cephalodiscus hodgsoni | 19 |
| Cephalodiscus indicus Schepotieff, 1909 | Cephalodiscus indicus | 19 |
| Cephalodiscus kempi John, 1932 | Cephalodiscus kempi | 19 |
| Cephalodiscus levinsoni Harmer, 1905 | Cephalodiscus levinsoni | 19 |
| Cephalodiscus nigrescens Lankester, 1905 | Cephalodiscus nigrescens | 19 |
| Cephalodiscus sibogae Harmer, 1905 | Cephalodiscus sibogae | 19 |
| Cephalodiscus solidus Andersson, 1907 | Cephalodiscus solidus | 19 |