Talk:Bissekty Formation

Cionodon kysylkumensis
For clarity's sake, Cionodon kysylkumensis was originally assigned (tentatively) to Cionodon by Riabinin (1931), but was later referred to Gilmoreosaurus by Nessov (1989), and then to Bactrosaurus by Nessov (1995). However, the referral of Cionodon kysylkumensis to Gilmoreosaurus by Nessov (1989) was based on the referral of skull remains that were later described by Nessov (1995) as Gilmoreosaurus arkhangelskyi (also found in Bissekty Formation; Nessov 1995), and the referral of C. kysylkumensis to Bactrosaurus has not been accepted by the paleontological community either. Most, recently C. kysylkumensis has been treated as a junior synonym of Levnesovia transoxiana by Sues and Avieranov (2009), but without comment. As a matter of fact, Nessov (1995) designated one of the vertebrae as the lectotype for Cionodon kysylkumensis and re-identified the putative paralectotype dentary as a maxilla.

Nessov, L. A. 1989. [New discoveries of remains of dinosaurs, crocodiles, and flying lizards of the late Mesozoic of the USSR]. Voprosy gyerpyetologii. Syed'maya gyerpyetologichyeskaya konfyeryentsiya, Avtoryefyerat doklada. Kiyev, Naukova Dumka, pp. 173-174.

Hans-Dieter Sues and Alexander Averianov. (2009). "A new basal hadrosauroid dinosaur from the Late Cretaceous of Uzbekistan and the early radiation of duck-billed dinosaurs." Proceedings of the Royal Society B: Biological Sciences, 276(1667): 2549-2555. doi:10.1098/rspb.2009.0229

A. N. Riabinin. 1931. Ostatki dinozavrov iz verkhnego mela nizov'ev r. Amu-Dar'i [On the dinosaurian remains from the Upper Cretaceous of the lower parts of the Amu-Daria River]. Zapiski Rossiyskogo Mineralogicheskogo Obshchestva 60(1):114-118.

Moving on, Richardoestesia asiatica is a new combination by Mickey Mortimer (http://home.comcast.net/~eoraptor/Dromaeosaurs.htm#Richardoestesiaasiatica) for Asiamericana asiatica (originally described as either a spinosaur or a saurodontid fish by Nessov 1995). (Buffetaut et. al. 2008 believes that Asiamericana is indeed a saurodontid fish.) In an SVP abstract, Sankey (2002) considered Richardoestesia and Euronychodon to be synonymous with Paronychodon, but the time gap between Euronychodon asiaticus and the holotypes of Paronychodon lacustris, Richardoestesia gilmorei, and Euronychodon portucalensis makes it unlikely that Euronychodon asiaticus could be congeneric (or even conspecific) with one of the latter taxa.

Sankey, 2002. Theropod dinosaur diversity in the latest Cretaceous (Maastrichtian) of North America. Journal of Vertebrate Paleontology. 22(3), 103A.

Buffetaut, E.; Suteethorn, V.; Tong, H.; and Amiot, R. (2008). "An Early Cretaceous spinosaur theropod from southern China". Geological Magazine 145 (5): 745–748. doi:10.1017/S0016756808005360. 68.4.61.168 (talk) 16:46, 8 March 2012 (UTC)Vahe Demirjian

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