Name(s) in cluster
| †Ptychometopus Schmidt | urn:lsid:organismnames.com:name:2851406 |
| †Ptychometopus Schmidt 1894 | urn:lsid:organismnames.com:name:2851407 |
| †Ptychometopus | urn:lsid:organismnames.com:name:2682970 |
...
| †Ptychometopus Schmidt | urn:lsid:organismnames.com:name:2851406 |
| †Ptychometopus Schmidt 1894 | urn:lsid:organismnames.com:name:2851407 |
| †Ptychometopus | urn:lsid:organismnames.com:name:2682970 |