| "Palaeornis" cliftii' Temporal range: Early Cretaceous,
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Order: | †Pterosauria |
| Suborder: | †Pterodactyloidea |
| Family: | †Lonchodectidae Mantell, 1844 |
| Genus: | †"Palaeornis" Mantell, 1844 (preoccupied) |
| Type species | |
| †"Palaeornis" cliftii Mantell, 1844
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| Synonyms | |
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"Palaeornis" cliftii is a pterosaur species known from parts of a single humerus (upper arm bone) found in the early Cretaceous (Valanginian) of the upper Tunbridge Wells Sand Formation, England.