Name(s) in cluster
| †Plethometopus modestus | urn:lsid:organismnames.com:name:2683481 |
| †Plethometopus modestus Ulrich | urn:lsid:organismnames.com:name:2486575 |
| †Plethometopus modestus Winston & Nicholls 1967 non Ulrich | urn:lsid:organismnames.com:name:2189397 |
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