The Dzunbain Formation (also known as Dzunbayn Formation) is a geological formation in Mongolia, dating to the Early Cretaceous (Aptian-Albian).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 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
Amphibians +GenusSpeciesLocationStratigraphic positionMaterialNotesImageEodiscoglossusShishkin M. A. (2000) Mesozoic amphibians from Mongolia and the Central Asiatic republics, The Age of Dinosaurs in Russia and Mongolia, 297-308E. sp.Khovboor
Squamates +GenusSpeciesLocationStratigraphic positionMaterialNotesImageDorsetisaurusAlifanov V. R. (2000) The fossil record of Cretaceous lizards from Mongolia, The Age of Dinosaurs in Russia and Mongolia, 368-389D. sp.KhovboorHoburogekkoAlifanov, V.R. (1989) The oldest gecko (Lacertilia, Gekkonidae) from the Lower Cretaceous of Mongolia. Paleontologicheskii Zhurnal 1989:124–126. [in Russian].H. suchanoviKhovboor"A partial skull."HodzhakuliaH. sp.KhovboorIguaniaIndeterminateKhovboorLacertiliaIndeterminateKhovboorParamacellodidaeIndeterminateKhovboorPriscagamidaeIndeterminateKhovboorSlavoiaS. sp.KhovboorXantusiidaeIndeterminateKhovboorXenosauridaeIndeterminateKhovboor
Mammals Genus Species Location Stratigraphic position Material Notes ImageArginbaatarTrofimov (1980) Multituberculata and Symmetrodonta from the Lower Cretaceous deposits in Mongolia. Trans. (Dokl) USSR Acad Sci, Earth Sci Sect 251. p. 188-191.A. dimitrievaeKhovboorArguimusD. Dashzeveg. (1979). Arguimus khosbajari gen. n, sp. n (Peramuridae, Eupantotheria) from the Lower Cretaceous of Mongolia. Acta Palaeontologica Polonica 24(2):199-204A. khosbajariKhovboorEobaatarKielan-Jaworowska et al. (1987), "Early Cretaceous multituberculates from Mongolia and a comparison with Late Jurassic form". Acta Palaeontologica Polonica 32, p. 3-47.E. magnus and E. minorKhovboor"Lower jaw fragment (E. magnus)."GobiconodonG. borissiaki and G. hobuvensisKhovboor"Both species known only from cranial remains."GobiotheriodonB. A. Trofimov. (1997). A new generic name Gobiotheriodon for a symmetrodont mammal Gobiodon Trofimov, 1980. Acta Palaeontologica Polonica 42(4):496G. infinitusKhovboorPreviously known as "Gobiodon". Heptoconodon Indeterminate KhovboorHovurlestesH. noyonKhovboorKielantheriumD. Dashzeveg. (1975). New primitive therian from the early Cretaceous of Mongolia. Nature 256:402-403K. gobiensisKhovboorMonobaatarM. mimicusKhovboorProkennolestesZ. Kielan-Jaworowska and D. Dashzeveg. (1989). Eutherian mammals from the Early Cretaceous of Mongolia. Zoologica Scripta 18(2):347-355P. minor, P. sp. and P. trofimoviKhovboorPlagiaulacidaeIndeterminateKhovboor
Turtles +GenusSpeciesLocationStratigraphic positionMaterialNotesImageHangaiemysV. 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 MongoliaH. hoburensisKhovboorMongolemysM. sp.Khovboor
Dinosaurs +GenusSpeciesLocationStratigraphic positionMaterialNotesImageMongolostegusM. exspectabilisT. 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/S0031030118140186Chamrin-Us"Posterior dorsal and anterior caudal vertebrae as well as pelvic material."Previously known as Wuerhosaurus mongoliensis. One of the last surviving stegosaurs.PsittacosauridaeSuslov Y. V., Barsbold R. (1983) Zakhoroneniye psittakozavrov v Khamryn-us (Vostochnaya Gobi, MNR), Trudy - Sovmestnaya Sovetsko-Mongol'skaya Paleontologicheskaya Ekspeditsiya 24, 118-120IndeterminateChamrin-UsPsittacosaurusKalandadze 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, 288-295P. mongoliensisKhovboorSauropodaIndeterminateChamrin-Us and KhovboorShamosaurusS. scutatusT.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: 110-118Chamrin-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."Arbour, Victoria Megan, (2014). Systematics, evolution, and biogeography of the ankylosaurid dinosaurs. Ph.D thesis, University of AlbertaStegosauridaeIndeterminateChamrin-UsOne of the last surviving stegosaurs.TroodontidaeBarsbold R., Osmólska H., et al (1987) On a new troodontid (Dinosauria, Theropoda) from the Early Cretaceous of Mongolia, Acta Palaeontologica Polonica 32 1-2, 121-132IndeterminateChamrin-Us
See also List of dinosaur-bearing rock formations
References