Name(s) in cluster
| Ptychoceratodus Jaekel 1926 | urn:lsid:organismnames.com:name:1308560 |
| Ptychoceratodus Jaekel | urn:lsid:organismnames.com:name:1405094 |
| Ptychoceratodus Jaeckel 1923 | urn:lsid:organismnames.com:name:1566532 |
| Ptychoceratodus | urn:lsid:organismnames.com:name:351235 |
...