Zhinst Tolgoi, Udyn Sayr [HMNS-GIN]: Late Campanian, Mongolia
collected by HMNS-GIN 1995, 1998, 2000, 2005, 2007
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia
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? Eutheria indet.
(Huxley 1880)
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Suzuki and Watabe 2000 | 8 specimens | ||||||||
980818-21 US | ||||||||||
Mammalia
- Multituberculata
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Multituberculata indet.
(Cope 1884)
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Suzuki and Watabe 2000 | 1 individual | ||||||||
At outcrop no. 41 (S of no. 39), and lower jaw and postcranial elements of a Multituberculata, 980817 US Mammal LKH | ||||||||||
Reptilia
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Testudinata indet.
(Oppel 1811)
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Watabe and Tsogtbaatar 2004 | |||||||||
turtle carapaces were found at southern outcrops (outcrop no. 37) | ||||||||||
Reptilia
- Testudines
- Nanhsiungchelyidae
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Nanhsiungchelyidae indet.
Yeh 1966
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Suzuki and Narmandakh 2004 | 2 specimens | ||||||||
fragmentary remains | ||||||||||
cf. Basilemys sp.
Hay 1902
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Watabe and Tsogtbaatar 2004 | 1 individual | ||||||||
carapace | ||||||||||
Reptilia
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Dinosauria indet.
(Owen 1842)
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Suzuki and Watabe 2000 | 3 individuals | ||||||||
980819 US Egg Nest B-O, 000719 US FJ, 070626 US SZK; At outcrop no. 41 (S of no. 39), eggshells | ||||||||||
Reptilia
- Prismatoolithidae
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Protoceratopsidovum sp.
Mikhailov 1994
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Suzuki and Watabe 2000 | 1 individual | ||||||||
950704 Zhinst SZK; nest with eggs | ||||||||||
Reptilia
- Theropoda
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Theropoda indet.
(Marsh 1881)
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Suzuki and Watabe 2000 | 1 individual | ||||||||
000722 US BON; "small theropod pelvis-hind limb specimen"; isolated bones - theropod digits | ||||||||||
Reptilia
- Theropoda
- Elongatoolithidae
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Nanhsiungoolithus sp.
Zhao 1975
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Reptilia
- Theropoda
- Dromaeosauridae
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Velociraptor sp.
Osborn 1924
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Suzuki and Watabe 2000 | 1 specimen | ||||||||
forelimbs; teeth of Velociraptor: outcrops in the SE area of Udyn Sayr | ||||||||||
Reptilia
- Protoceratopsidae
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Protoceratopsidae indet.
Granger and Gregory 1923
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Watabe and Tsogtbaatar 2004 | 1 specimen | ||||||||
000723 US BON; "a robust jaw of a protoceratopsid"; At outcrop no. 41 (S of no. 39), teeth and partial skeletons of a protoceratopsid | ||||||||||
Bagaceratops sp.
Maryanska and Osmólska 1975
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Watabe and Tsogtbaatar 2004 | 1 individual | ||||||||
MPC-D 100/551B (= 000719 US FJM Baga) | ||||||||||
= cf. Bagaceratops sp.
Maryanska and Osmólska 1975
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Czepiński 2020 | |||||||||
Protoceratops sp.
Granger and Gregory 1923
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Watabe and Suzuki 2000 | 10 specimens | ||||||||
MPC-D 100/540a-d (= 070626 US KWR); 950704 Udyn Sayr MTS-I & MTS-II, 980819 US Proto NAR; 980821 US SZK 9:05; 000720 US SZK Proto; 000720 US TSGT small Proto | ||||||||||
Protoceratops andrewsi
Granger and Gregory 1923
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Handa et al. 2012 | 3 specimens | ||||||||
MPC-D 100/537, 100/539 (= 980821 US Proto ENKH?); MPC-D 100/551 (= 000720 US-Zhinst, GI SPS 100/588, and 100/528; formerly Bagaceratops) | ||||||||||
Protoceratops cf. andrewsi
Granger and Gregory 1923
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Handa et al. 2012 | 1 specimen | ||||||||
MPC-D 100/538 | ||||||||||
Reptilia
- Ovaloolithidae
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Ovaloolithidae indet.
Mikhailov 1991
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Suzuki and Watabe 2000 | |||||||||
eggs | ||||||||||
Reptilia
- Ankylosauridae
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Ankylosauridae indet.
Brown 1908
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Watabe and Tsogtbaatar 2004 | 3 individuals | ||||||||
000716 US ENKH-ANKLYO, 000717 US ENKH-ANKYLO, 000718 US BON; ankylosaur scutes and vertebrae, and a small skull of ankylosaurwere found at southern outcrops (outcrop no. 37) | ||||||||||
? Pinacosaurus sp.
Gilmore 1933
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Suzuki and Watabe 2000 | 1 individual | ||||||||
partial skeleton, only incompletely excavated | ||||||||||
Pinacosaurus sp.
Gilmore 1933
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Watabe and Tsogtbaatar 2004 | 1 individual | ||||||||
On July 16 the skeleton of a small individual ankylosaur (Pinacosaurus) found by Mongolian preparator Enkhbat in 1998 was excavated by the monolith method at the southern small outcrop of eolian deposits (no. 34) | ||||||||||
Reptilia
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Crocodylia indet.
(Owen 1842)
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Watabe and Tsogtbaatar 2004 | 1 individual | ||||||||
000722 US SZK Croco; "an infant crocodile" | ||||||||||
Lacertilia indet.
(Owen 1842)
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Watabe and Suzuki 2000 | 10 specimens | ||||||||
000725 US OTG LIZARD-1, LIZARD-2; skull of a lizard; a lizard skeleton with scales; 980818 US Lizard ENKH, 980818-21 US | ||||||||||
Varanoidea indet.
Gray 1827
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Watabe and Tsogtbaatar 2004 | 1 individual | ||||||||
outcrop no. 52, isolated bones from the skeleton of a varanoid lizard | ||||||||||
see common names |
Geography
Country: | Mongolia | State/province: | Omnogov |
Coordinates: | 44.1° North, 102.9° East (view map) | ||
Paleocoordinates: | 41.6° North, 92.0° East | ||
Basis of coordinate: | stated in text | ||
Altitude: | 1327 meters | ||
Geographic resolution: | outcrop |
Time
Period: | Cretaceous | Epoch: | Late Cretaceous |
Stage: | Campanian | 10 m.y. bin: | Cretaceous 7 |
Key time interval: | Late Campanian | ||
Age range of interval: | 83.6 - 72.1 m.y. ago |
Stratigraphy
Formation: | Djadokhta | ||||
Stratigraphic resolution: | group of beds | ||||
Stratigraphy comments: -upper horizon
-possibly Baruungoyot Fm. (Czepinksi 2020) -Dashzeveg et al. 2005: The quick stratigraphic succession of normal and reversed magnetozones suggests, but does not clearly establish, that the sediments may have been deposited during the rapid sequence of polarity changes in the late part of the Campanian between about 75 to 71 Ma. |
Lithology and environment
Primary lithology: | "cross stratification",fine,nodular,red sandstone |
Includes fossils? | Y |
Lithology description: "fine sandstone…characterized by large-scaled, steeply-dipping cross-stratification". "Fossiliferous beds are made of fine sandstone including many calcarous nodules" | |
Environment: | dune |
Taphonomy
Modes of preservation: | body,concretion |
Size of fossils: | macrofossils,mesofossils |
Spatial resolution: | parautochthonous |
Collection methods and comments
Collection methods: | surface (in situ),mechanical,field collection | ||
Reason for describing collection: | general faunal/floral analysis | ||
Collectors: | HMNS-GIN | Collection dates: | 1995, 1998, 2000, 2005, 2007 |
Collection method comments: HMNS-Hayashibara Museum of Natural Sciences |
Metadata
Also known as: | Udan Sayr, | ||
Database number: | 127678 | ||
Authorizer: | R. Benson, M. Carrano | Enterer: | R. Benson, M. Carrano |
Modifier: | M. Carrano | Research group: | vertebrate |
Created: | 2012-05-22 00:42:44 | Last modified: | 2022-07-29 14:46:55 |
Access level: | the public | Released: | 2012-05-22 00:42:44 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
76473. | Y. Ariunchimeg. 1997. Results of studies of dinosaur eggs. Abstract of Report Meeting, Mongolia-Japan Joint Paleontological Expedition 13 [M. Carrano/M. Carrano] |
Secondary references:
82280 | Ł Czepiński. 2020. New protoceratopsid specimens improve the age correlation of the Upper Cretaceous Gobi Desert strata. Acta Palaeontologica Polonica 65(3):481-497 [M. Carrano/M. Carrano/M. Carrano] | |
15459 | ETE | D. Dashzeveg, L. Dingus, D.B. Loope, C.C. Swisher, III, T. Dulam and M.R. Sweeney. 2005. New stratigraphic subdivision, depositional environment, and age estimate for the Upper Cretaceous Djadokhta Formation, southern Ulan Nur Basin, Mongolia. American Museum Novitates (3498)1-31 [M. Carrano/K. Maguire/G. Varnham] |
50510 | N. Handa, M. Watabe, and K. Tsogtbaatar. 2012. New specimens of Protoceratops (Dinosauria: Neoceratopsia) from the Upper Cretaceous in Udyn Sayr, southern Gobi area, Mongolia. Paleontological Research 16(3):179-198 [M. Carrano/M. Carrano] | |
82301 | Y. Matsumoto, R. Hashimoto, and T. Sonoda. 2000. Report of preparation works for Mongolian specimens in HMNS from March 1994 to December 1998. Hayashibara Museum of Natural Sciences Research Bulletin 1:113-127 [M. Carrano/M. Carrano] | |
82304 | Y. Matsumoto, R. Hashimoto, T. Sonoda, Y. Fujiyama, B. Mifune, Y. Kawahara, and M. Saneyoshi. 2010. Report of the preparation works for Mongolian specimens in Hayashibara Museum of Natural Sciences: 1999–2008. Hayashibara Museum of Natural Sciences Research Bulletin 3:167-185 [M. Carrano/M. Carrano/M. Carrano] | |
55067 | M. Saneyoshi, M. Watabe, T. Tsubamoto, K. Tsogtbaatar, T. Chinzorig and S. Suzuki. 2010. Report of the HMNS-MPC Joint Paleontological Expedition in 2007. Hayashibara Museum of Natural Sciences Research Bulletin 3:19-28 [M. Carrano/M. Carrano] | |
41670 | S. Suzuki and P. Narmandakh. 2004. Change of the Cretaceous turtle faunas in Mongolia. Hayashibara Museum of Natural Sciences Research Bulletin 2:7-14 [R. Benson/R. Benson] | |
42292 | S. Suzuki and M. Watabe. 2000. Report on the Japan-Mongolia Joint Paleontological Expedition to the Gobi desert, 1995. Hayashibara Museum of Natural Sciences Research Bulletin 1:45-57 [R. Benson/R. Benson/M. Carrano] | |
42293 | S. Suzuki and M. Watabe. 2000. Report on the Japan–Mongolia Joint Paleontological Expedition to the Gobi desert, 1998. Hayashibara Museum of Natural Sciences Research Bulletin 1:83-98 [R. Benson/R. Benson/M. Carrano] | |
42154 | M. Watabe and S. Suzuki. 2000. Cretaceous fossil localities and a list of fossils collected by the Hayashibara Museum of Natural Sciences and Mongolian Paleontological Center Joint Paleontological Expedition (JMJPE) from 1993 through 1998. Hayashibara Museum of Natural Sciences Research Bulletin 1:99-108 [R. Benson/R. Benson] | |
42294 | M. Watabe and K. Tsogtbaatar. 2004. Report on the Japan–Mongolia Joint Paleontological Expedition to the Gobi desert, 2000. Hayashibara Museum of Natural Sciences Research Bulletin 2:45-67 [R. Benson/R. Benson/M. Carrano] |