Euronychodon
Euronychodon | |
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Euronychodon tooth crown | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Clade: | Dinosauria |
Clade: | Saurischia |
Clade: | Theropoda |
Family: | †Troodontidae |
Genus: | †Euronychodon Antunes & Sigogneau-Russell, 1991 |
Type species | |
†Euronychodon portucalensis Antunes & Sigogneau-Russell, 1991
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Species | |
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Euronychodon ("European claw tooth") is the name given to a genus of coelurosaur dinosaur from the Late Cretaceous of Europe and Asia. Euronychodon is known from teeth only. These are similar to those of another coelurosaur tooth genus, Paronychodon.
Species
Two species of Euronychodon have been named to date.
- E. portucalensis (named for Portugal, from Portucale, an old name of Porto): the remains consist of three teeth. In 1988 referred to Paronychodon lacustris,[1] they were later considered diagnostic enough for them to represent a distinct genus and species. They were found at the locality of Taveiro, dated as Campanian-Maastrichtian (about 70 million years old). The type species of Euronychodon, E. portucalensis was named and described in 1991 by Miguel Telles Antunes and Denise Sigogneau-Russell. The generic name is a contraction of "Europe" and Paronychodon. The holotype CEPUNL TV 20, is one of the teeth. It is 1.8 millimetres long, recurved and strongly elongated with a D-shaped cross-section. The other two teeth, CEPUNL TV 18 and CEPUNL TV 19, are the paratypes.[2]
- E. asiaticus (named for form taxon and suggested such deviant teeth grew accidentally, when tooth pairs happened to develop on closing jaw bone sutures with juvenile individuals.[3]
Systematics
Being a tooth-taxon, the true affinities of Euronychodon are hard to determine. The teeth are similar to the better-known
Palaeobiology
The remains indicate a small animal, estimated at around two meters (6.6 feet). The teeth indicate a carnivorous or insectivorous diet. Taveirosaurus was found at the same locality.
See also
References
- ^ Antunes, M.T. & Broin, F., 1988, "Le Crétacé terminal de Beira Litoral, Portugal: remarques stratigraphiques et écologiques, étude complémentaire de Rosasia soutoi (Chelonii, Bothremydidate)", Ciências de Terra 9: 153-200
- ^ M.T. Antunes, D. Sigogneau-Russell, 1991, "Nouvelles données sur les Dinosaures du Crétacé supérieur du Portugal", Comptes-rendus de la Académie des Sciences de Paris, Series II 313: 113–119
- ^ Nesov, L.A., 1995, "Dinozavri severnoi Yevrasii: Novye dannye o sostave kompleksov, ekologii i paleobiogeografii", Scientific Research Institute of the Earth's Crust, St. Petersburg State University, St. Petersburg, Russia: pp 156
- ^ Hwang S.H. 2005. "Phylogenetic patterns of enamel microstructure in dinosaur teeth." Journal of Morphology, 266: 208-240
Further reading
- Antunes, M.T. & Mateus, O. (2003). Dinosaurs of Portugal. C. R. Palevol 2: 77-95