Name(s) in cluster
| †Elasmosauridae Cope 1870 | urn:lsid:organismnames.com:name:1550019 |
| †Elasmosauridae Cope 1869 | urn:lsid:organismnames.com:name:1269964 |
| †Elasmosauridae | urn:lsid:organismnames.com:name:570031 |
| †Elasmosauridae Cope 1868 | urn:lsid:organismnames.com:name:1783028 |
| †Elasmosauridae Cope | urn:lsid:organismnames.com:name:3056787 |
...