Name(s) in cluster
| †Palaeacis | urn:lsid:organismnames.com:name:882841 |
| †Palaeacis Haime in Milne-Edwards 1857 | urn:lsid:organismnames.com:name:2091640 |
| †Palaeacis Haime 1857 | urn:lsid:organismnames.com:name:420700 |
| †Palaeacis Haime in Milne-Edwards & Haime 1857 | urn:lsid:organismnames.com:name:850888 |
| †Palaeacis Haime in Milne Edwards 1857 | urn:lsid:organismnames.com:name:1861111 |
...