Name(s) in cluster
| †Hyattoceras | urn:lsid:organismnames.com:name:2277357 |
| †Hyattoceras Gemmellaro 1887 | urn:lsid:organismnames.com:name:2675263 |
| †Hyattoceras Gemm. | urn:lsid:organismnames.com:name:3798599 |
| †Hyattoceras Gemmellaro | urn:lsid:organismnames.com:name:3101640 |
...