Pectinodon
Pectinodon | |
---|---|
Tooth of cf. Pectinodon | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Clade: | Dinosauria |
Clade: | Saurischia |
Clade: | Theropoda |
Family: | †Troodontidae |
Genus: | †Pectinodon Carpenter, 1982 |
Type species | |
†Pectinodon bakkeri Carpenter, 1982
| |
Synonyms | |
|
Pectinodon is a
History of discovery
In 1982,
The holotype, UCM 38445, consists of a 6.2 mm long adult tooth. The paratypes are three juvenile teeth.[1]
In 1985, Lev Nesov named a second species, Pectinodon asiamericanus, based on specimen CCMGE 49/12176, a tooth from the Khodzhakul Formation of Uzbekistan that dates from the Cenomanian age.[2] This is today often considered a nomen dubium.[3]
While historically considered synonymous with Troodon or more specifically the species
In 2013, Currie and Derek Larson concluded that Pectinodon bakkeri was valid and its teeth could be found both in the Lance Formation and the coeval Hell Creek Formation. Some teeth from the older Campanian Dinosaur Park Formation could not be statistically differentiated from them, likely due to an insufficiently large sample, and were referred to a cf. Pectinodon.[8]
See also
References
- ^ a b c Carpenter, K. (1982). "Baby dinosaurs from the Late Cretaceous Lance and Hell Creek formations and a description of a new species of theropod" (PDF). Contributions to Geology, University of Wyoming. 20 (2): 123–134.
- ^ L.A. Nesov, 1985, "Novye mlekopitayushchie Mela Kyzylkumov", Vestnik Leningradskogo Universiteta, Geologiia, Geografiia, series 7 17: 8-18
- ^ A. O. Averianov and H.-D. Sues, 2007, "A new troodontid (Dinosauria: Theropoda) from the Cenomanian of Uzbekistan, with a review of troodontid records from the territories of the former Soviet Union", Journal of Vertebrate Paleontology 27(1): 87-98
- ^ Olshevsky, G., 1991 A Revision of the Parainfraclass Archosauria Cope, 1869, Excluding the Advanced Crocodylia. Mesozoic Meanderings 2 196 pp
- ^ Currie, P. (2005). "Theropods, including birds." in Currie and Koppelhus (eds). Dinosaur Provincial Park, a spectacular ecosystem revealed, Part Two, Flora and Fauna from the park. Indiana University Press, Bloomington. Pp 367–397.
- ^ N. Longrich, 2008, "A new, large ornithomimid from the Cretaceous Dinosaur Park Formation of Alberta, Canada: implications for the study of dissociated dinosaur remains", Palaeontology 51(4) 983-997
- PMID 21949721.
- ^ Larson D.W., Currie P.J., 2013, "Multivariate Analyses of Small Theropod Dinosaur Teeth and Implications for Paleoecological Turnover through Time", PLoS ONE 8(1): e54329. doi:10.1371/journal.pone.0054329