Biology:Clepsysaurus
| Clepsysaurus | |
|---|---|
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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 genus of extinct archosaur described by Isaac Lea in 1851[1] from remains discovered in the Carnian[2] Passaic Formation of Lehigh County, Pennsylvania.[1] Two species are known: C. pennsylvanicus (the type species)[1] and C. veatleianus.[3] The holotype of C. pennsylvanicus, ANSP 9526, 9555-71, 9594-5, consists of teeth, ribs and vertebrae,[4] while the holotype of C. veatleianus, AMNH 2331, consists of a single tooth, with AMNH 2330, a tooth, as a referred specimen.[3] Other specimens of C. pennsylvanicus are known, including ANSP 15071 (a left anterior dentary with 23 teeth, a right dentary with 30 teeth and a portion of the right temporal region) and AMNH 2337 (a single tooth).[5]
Clepsysaurus was traditionally classed as a sauropodomorph,[3][4] but more recent studies indicate that it was either a dubious basal archosaur[6] or a member of the Phytosauria.[7] Clepsysaurus was eventually[when?] seen as a synonym of either the dubious archosaur Palaeosaurus or the sauropodomorph Anchisaurus, but Clepsysaurus was eventually resurrected as a valid, but dubious, genus.[4][7][8]
Gallery
AMNH 2330, a tooth referred to C. veatleianus
C. pennsylvanicus tooth AMNH 3227 seen from two different angles
References
- ↑ 1.0 1.1 1.2 Lea, I. (1851). "Remarks on Clepsysaurus pennsylvanicus". Proceedings of the Academy of Natural Sciences of Philadelphia 18 (205).
- ↑ Berg, T.M. (1983). "Stratigraphic Correlation Chart of Pennsylvania: G75". Pennsylvania Geologic Survey, Harrisburg, Pennsylvania.
- ↑ 3.0 3.1 3.2 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.
- ↑ 4.0 4.1 4.2 Spamer, Earle E.; Daeschler, Edward; Vostreys-Shapiro, L. Gay (1995). A Study of Fossil Vertebrate Types in the Academy of Natural Sciences of Philadelphia: Taxonomic, Systematic, and Historical Perspectives. Philadelphia Academy of Natural Sciences. ISBN 978-0-910006-51-4. https://books.google.com/books?id=3loD7lTLBxgC&pg=PA1.
- ↑ von Huene, F. (1921). "Reptilian and stegocephalian remains from the Triassic of Pennsylvania in the Cope Collection". Bulletin of the AMNH 44: article 19.
- ↑ Nesbitt, Sterling J.; Desojo, Julia B.; Irmis, Randall B. (2013). "Anatomy, phylogeny and palaeobiology of early archosaurs and their kin". Geological Society, London, Special Publications 379 (1): 1–7. doi:10.1144/sp379.21. ISSN 0305-8719. Bibcode: 2013GSLSP.379....1N. http://dx.doi.org/10.1144/sp379.21.
- ↑ 7.0 7.1 Stocker, M. R.; Butler, R. J. (2013). "Phytosauria". Anatomy, Phylogeny and Palaeobiology of Early Archosaurs and their Kin. Geological Society, London, Special Publications. p. 379.
- ↑ "Clepsysaurus". Paleofile. http://www.paleofile.com/Pseudosuchia/Clepsysaurus.asp.
Wikidata ☰ Q104840760 entry
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