| Patagosphenos | |
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| Genus: | †Patagosphenos Gentil et al., 2019 | 
| Type species | |
| Patagosphenos watuku Gentil et al., 2019 | |
Patagosphenos is an extinct genus of sphenodontian from the Late Cretaceous Huincul Formation of Argentina. It contains a single species, Patagosphenos watuku. [1]