Name(s) in cluster
| †Ptychagnostus | urn:lsid:organismnames.com:name:379317 |
| †Ptychagnostus Jaekel | urn:lsid:organismnames.com:name:2410016 |
| †Ptychagnostus Jaekel 1909 | urn:lsid:organismnames.com:name:81481 |
...
| †Ptychagnostus | urn:lsid:organismnames.com:name:379317 |
| †Ptychagnostus Jaekel | urn:lsid:organismnames.com:name:2410016 |
| †Ptychagnostus Jaekel 1909 | urn:lsid:organismnames.com:name:81481 |