Dzunbain Formation Explained
The Dzunbain Formation (also known as Dzunbayn Formation) is a geological formation in Mongolia, dating to the Early Cretaceous (Aptian-Albian).[1] The formation contains fossils of mammals, reptiles, turtles and dinosaurs. The Dzunbain Formation is equivalent to the Khuren Dukh Formation.
Paleobiota of the Dzunbain Formation
Squamates
Mammals
| Genus | Species | Location | Stratigraphic position | Material | Notes | Image |
|---|
| Arginbaatar[5] | A. dimitrievae | Khovboor | | | | |
| Arguimus[6] | A. khosbajari | Khovboor | | | | |
| Eobaatar[7] | E. magnus and E. minor | Khovboor | | "Lower jaw fragment (E. magnus)." | | |
| Gobiconodon[8] | G. borissiaki and G. hobuvensis | Khovboor | | "Both species known only from cranial remains." | | |
| Gobiotheriodon[9] | G. infinitus | Khovboor | | | Previously known as "Gobiodon". | |
| Heptoconodon | Indeterminate | Khovboor | | | | |
| Hovurlestes[10] | H. noyon | Khovboor | | | | |
| Kielantherium[11] | K. gobiensis | Khovboor | | | | |
| Monobaatar | M. mimicus | Khovboor | | | | |
| Prokennolestes[12] | P. minor, P. sp. and P. trofimovi | Khovboor | | | | |
| Plagiaulacidae | Indeterminate | Khovboor | | | | |
|
Turtles
!Genus!Species!Location!Stratigraphic position!Material!Notes!Image| Hangaiemys[13] | H. hoburensis | Khovboor | | | | |
| Mongolemys | M. sp. | Khovboor | | | | | |
Dinosaurs
!Genus!Species!Location!Stratigraphic position!Material!Notes!Image| Mongolostegus | M. exspectabilis[14] | Chamrin-Us | | "Posterior dorsal and anterior caudal vertebrae as well as pelvic material." | Previously known as Wuerhosaurus mongoliensis.[15] One of the last surviving stegosaurs. | |
| Psittacosauridae[16] | Indeterminate | Chamrin-Us | | | | |
| Psittacosaurus[17] | P. mongoliensis | Khovboor | | | | |
| Sauropoda | Indeterminate | Chamrin-Us and Khovboor | | | | |
| Shamosaurus | S. scutatus[18] | Chamrin-Us and Khovboor | | "A complete skull, lower jaws and partial postcranial skeleton with armor. Also referred are a skull piece, lower jaw and two cervical halfrings."[19] | | |
| Stegosauridae | Indeterminate | Chamrin-Us | | | One of the last surviving stegosaurs. | |
| Troodontidae[20] | Indeterminate | Chamrin-Us | | | | | |
See also
- List of dinosaur-bearing rock formations
Notes and References
- Shuvalov V. F. (1974) O geologicheskom stroenii i vozraste mestonakhozhdenii Khobur i Khuren-Dukh [On the geology and age of the Khobur and Khuren-Dukh localities], Mesozoic and Cenozoic Faunas and Biostratigraphy of Mongolia; The Joint Soviet-Mongolian Paleontological Expedition, Transactions 1, 296-304
- Shishkin M. A. (2000) Mesozoic amphibians from Mongolia and the Central Asiatic republics, The Age of Dinosaurs in Russia and Mongolia, 297-308
- Alifanov V. R. (2000) The fossil record of Cretaceous lizards from Mongolia, The Age of Dinosaurs in Russia and Mongolia, 368-389
- Alifanov, V.R. (1989) The oldest gecko (Lacertilia, Gekkonidae) from the Lower Cretaceous of Mongolia. Paleontologicheskii Zhurnal 1989:124–126. [in Russian].
- Trofimov (1980) Multituberculata and Symmetrodonta from the Lower Cretaceous deposits in Mongolia. Trans. (Dokl) USSR Acad Sci, Earth Sci Sect 251. p. 188-191.
- D. Dashzeveg. (1979). Arguimus khosbajari gen. n, sp. n (Peramuridae, Eupantotheria) from the Lower Cretaceous of Mongolia. Acta Palaeontologica Polonica 24(2):199-204
- Kielan-Jaworowska et al. (1987), "Early Cretaceous multituberculates from Mongolia and a comparison with Late Jurassic form". Acta Palaeontologica Polonica 32, p. 3-47.
- Lopatin . Alexey . Averianov . Alexander . 2015 . Gobiconodon (Mammalia) from the Early Cretaceous of Mongolia and Revision of Gobiconodontidae . Journal of Mammalian Evolution . en . 22 . 1 . 17–43 . 10.1007/s10914-014-9267-4 . 1064-7554.
- B. A. Trofimov. (1997). A new generic name Gobiotheriodon for a symmetrodont mammal Gobiodon Trofimov, 1980. Acta Palaeontologica Polonica 42(4):496
- Lopatin . A. V. . Averianov . A. O. . 2018 . A New Stem Placental Mammal from the Early Cretaceous of Mongolia . Doklady Biological Sciences . 478 . 1 . 8–11 . 10.1134/s0012496618010027 . 0012-4966.
- D. Dashzeveg. (1975). New primitive therian from the early Cretaceous of Mongolia. Nature 256:402-403
- Z. Kielan-Jaworowska and D. Dashzeveg. (1989). Eutherian mammals from the Early Cretaceous of Mongolia. Zoologica Scripta 18(2):347-355
- V. B. Sukhanov. (2000). Mesozoic turtles of Middle and Central Asia. In M. J. Benton, M. A. Shishkin, D. M. Unwin, & E N. Kurichkin (eds.), The Age of Dinosaurs in Russia and Mongolia
- T. A. Tumanova & V. R. Alifanov (2018) First Record of Stegosaur (Ornithischia, Dinosauria) from the Aptian-Albian of Mongolia. Paleontological Journal 52(14) DOI: https://doi.org/10.1134/S0031030118140186 https://link.springer.com/article/10.1134/S0031030118140186
- Web site: Ulansky. Roman. E.. 2014. Evolution of the stegosaurs (Dinosauria; Ornithischia). Dinologia. 35 . ru. dinoweb.narod.ru.
- Suslov Y. V., Barsbold R. (1983) Zakhoroneniye psittakozavrov v Khamryn-us (Vostochnaya Gobi, MNR), Trudy - Sovmestnaya Sovetsko-Mongol'skaya Paleontologicheskaya Ekspeditsiya 24, 118-120
- Kalandadze N. N., Kurzanov S. M. (1974) Nizhnemelove mestonakhozhdeniya nazemnykh pozvonochnykh Mongolii [Lower Cretaceous terrestrial vertebrate localities of Mongolia], Mesozoic and Cenozoic Faunas and Biostratigraphy of Mongolia. The Joint Soviet-Mongolian Paleontological Expedition, Transactions 1, 288-295
- T.A. Tumanova, (1983), "Pervyy ankilozavr iz nizhnego mela Mongolii", In: L.P. Tatarinov, R. Barsbold, E. Vorobyeva, B. Luvsandanzan, B.A. Trofimov, Yu. A. Reshetov, & M.A. Shishkin (eds.), Iskopayemyye reptilii mongolii. Trudy Sovmestnaya Sovetsko-Mongol'skaya Paleontologicheskaya Ekspeditsiya 24: 110-118
- Arbour, Victoria Megan, (2014). Systematics, evolution, and biogeography of the ankylosaurid dinosaurs. Ph.D thesis, University of Alberta
- Barsbold R., Osmólska H., et al (1987) On a new troodontid (Dinosauria, Theropoda) from the Early Cretaceous of Mongolia, Acta Palaeontologica Polonica 32 1-2, 121-132
