Name(s) in cluster
| †Ptychagnostus aculeatus | urn:lsid:organismnames.com:name:1016691 |
| †Ptychagnostus aculeatus (Angelin 1851) | urn:lsid:organismnames.com:name:436085 |
| †Ptychagnostus aculeatus (Angelin ) | urn:lsid:organismnames.com:name:2341386 |
...
| †Ptychagnostus aculeatus | urn:lsid:organismnames.com:name:1016691 |
| †Ptychagnostus aculeatus (Angelin 1851) | urn:lsid:organismnames.com:name:436085 |
| †Ptychagnostus aculeatus (Angelin ) | urn:lsid:organismnames.com:name:2341386 |