| Clepsysaurus Temporal range: Late Triassic,
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| Holotype tooth (AMNH 2331) of C. veatleianus seen from two different angles | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Clade: | Archosauromorpha |
| Clade: | Archosauriformes |
| Clade: | Archosauria |
| Genus: | †Clepsysaurus Lea, 1851 |
| Type species | |
| †Clepsysaurus pennsylvanicus Lea, 1851
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| Other species | |
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| Synonyms | |
Clepsysaurus (from Greek: κλεψύδρα klepsúdra, 'water thief' and Greek: σαῦρος saûros, 'lizard') is a dubious[1] genus of extinct archosaur from the Carnian[2] Passaic Formation and Lockatong Formation of Lehigh County, and York County, Pennsylvania.[3]
Two species are known: C. pennsylvanicus (the type species)[3] and C. veatleianus.[4]
- ^ Cite error: The named reference
Phytosaurwas invoked but never defined (see the help page). - ^ Berg, T.M.; et al. (1983). "Stratigraphic Correlation Chart of Pennsylvania: G75". Pennsylvania Geologic Survey, Harrisburg, Pennsylvania.
- ^ a b Lea, I. (1851). "Remarks on Clepsysaurus pennsylvanicus". Proceedings of the Academy of Natural Sciences of Philadelphia. 18 (205).
- ^ Cope, E. D. (1877). "Descriptions of extinct Vertebrata from the Permian and Triassic formations of the United States". Proceedings of the American Philosophical Society. 17 (100): 182–193. JSTOR 982295.