Khongil Tsav I [HMNS-GIN]: Cenomanian - Santonian, Mongolia
collected by HMNS-GIN 1993–1995, 1998, 2000, 2007, 2008

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Mollusca indet. (Linnaeus 1758)
Watabe and Suzuki 2000
molluscan fossils
Reptilia
Crocodylia indet. (Owen 1842)
Watabe and Suzuki 2000
scutes, etc.
Dinosauria indet. (Owen 1842)
dinosaur eggshells, foot
Reptilia - Theropoda
Theropoda indet. (Marsh 1881)
Watabe and Suzuki 2000
digits, teeth, skull
Reptilia - Theropoda - Ornithomimidae
Ornithomimidae indet. Marsh 1890
Watabe and Suzuki 2000
ornithomimid fossils, incl. pes (950807 KgT Ornithomimid), 080922 KgT KHB
Reptilia
Ankylosauria indet. (Osborn 1923)
Suzuki and Watabe 2000 4 individuals
3 partial skeletons (mainly pelvic part) in 1995, 1 collected in 1998 (field no. 980813 Khg Anklyo); 000721 Kh ANKYLO-I-1, 2, 000801 Kh ANKYLO-II, 000802 Kh ANKYLO-I-3, 000804 Kh ANKYLO-I UJ-1 to 4
Reptilia - Ankylosauridae
Ankylosauridae indet. Brown 1908
Saneyoshi et al. 2010 6 specimens
080920 KgT TSGT, MB, KWR, HRS
Reptilia
Hadrosauroidea indet. Huene 1954
Tsubamoto et al. 2010 3 specimens
080921 KgT SNY
    = Gobihadros mongoliensis Tsogtbaatar et al. 2019
Tsogtbaatar et al. 2019
MPC-D100/743, 744
Reptilia - Hadrosauridae
Hadrosauridae indet. Cope 1869
Tsogtbaatar 1997 3 individuals
field no. 940617-KGT-I TSOGT-5, 980813 Khg, 950803 KgT Hadro PJ-1, 2
Reptilia
Sauropoda indet. (Marsh 1878)
Watabe and Suzuki 2000 2 specimens
femur; 940617 KgT-I GK-1 (listed as humerus in Matsumoto et al. 2000)
Reptilia - Testudines - Nanhsiungchelyidae
Nanhsiungchelyidae indet. Yeh 1966
Suzuki and Narmandakh 2004 1 specimen
fragmentary remains
Reptilia - Testudines - Trionychidae
Trionychidae indet. Gray 1825
Suzuki and Narmandakh 2004 5 specimens
fragmentary remains
Gobiapalone orlovi (Khosatzky 1976)
Danilov et al. 2014 1 specimen
recombined as Kuhnemys orlovi
Incomplete carapace
see common names

Geography
Country:Mongolia State/province:Omnogov
Coordinates: 44.2° North, 102.8° East (view map)
Paleocoordinates:45.0° North, 93.0° East
Basis of coordinate:estimated from map
Geographic resolution:outcrop
Time
Period: Cretaceous Epoch: Late Cretaceous
Stage: Cenomanian - Santonian 10 m.y. bin: Cretaceous 5 - Cretaceous 6
Key time interval: Cenomanian - Santonian
Age range of interval: 100.5 - 83.6 m.y. ago
Stratigraphy
Formation:Baynshire
Stratigraphic resolution:group of beds
Stratigraphy comments: Bayn Shire Formation

Kurumada et al. 2020: Two meaningful calcite U–Pb ages were obtained; 95.9 ± 6.0 and 89.6 ± 4.0 Ma, which are consistent with published ages from the Bayn Shire Formation.
Lithology and environment
Primary lithology:"cross stratification",fine,red lithified sandstone
Secondary lithology:red mudstone
Includes fossils?Y
Lithology description: "alternations of red sandstone and mudstone layers, and thick red mudstone layers, and conglomerate-gravel layers." fossils in "red fine sandstone layer with platy monoclinal cross-stratification…the hard red fine sandstone layer."
Environment:fluvial indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Preservation of anatomical detail:good
Spatial resolution:parautochthonous
Collection methods and comments
Collection methods:selective quarrying,surface (in situ),field collection
Reason for describing collection:general faunal/floral analysis
Collectors:HMNS-GIN Collection dates:1993–1995, 1998, 2000, 2007, 2008
Collection method comments: JMJPE explored here in 1995 and 1998. Three partial ankylosaur skeletons (mainly pelvic part) in 1995, and one of them was collected in 1998. A well-preserved skeleton of a hadrosaur was discovered from the upper horizon of the geological section. Both the hadrosaur and one of the ankylosaurs were destroyed by poachers.
Metadata
Database number:108340
Authorizer:M. Carrano, P. Mannion, R. Benson Enterer:M. Carrano, R. Benson, J. Tennant
Modifier:M. Carrano Research group:vertebrate
Created:2011-04-28 06:38:32 Last modified:2022-07-29 14:02:12
Access level:the public Released:2011-04-28 06:38:32
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:

50209 I. G. Danilov, R. Hirayama, V. B. Sukhanov, S. Suzuki, M. Watabe and N. S. Vitek. 2014. Cretaceous soft-shelled turtles (Trionychidae) of Mongolia: new diversity, records, and a revision. Journal of Systematic Palaeontology 12(7):799-832 [P. Mannion/J. Tennant/P. Mannion]
79239 Y. Kurumada, S. Aoki, K. Aoki, D. Kato, M. Saneyoshi, K. Tsogtbaatar, B. F. Windley and S. Ishigaki. 2020. Calcite U–Pb age of the Cretaceous vertebrate-bearing Bayn Shire Formation in the Eastern Gobi Desert of Mongolia: Usefulness of caliche for age determination. Terra Nova 32:246-252 [P. Mannion/G. Varnham/G. Varnham]
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]
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]
76475 K. Tsogtbaatar. 1997. Preliminary results of study on Mongolian hadrosaurids. Abstract of Report Meeting, Mongolia-Japan Joint Paleontological Expedition 15 [M. Carrano/M. Carrano/M. Carrano]
35934ETE K. Tsogtbaatar. 2004. Fossil specimens prepared in Mongolian Paleontological Center 1993-2001. Hayashibara Museum of Natural Sciences Research Bulletin 2:123-128 [M. Carrano/M. Carrano]
80572 K. Tsogtbaatar and T. Chinzorig. 2007. Mongolian hadrosaurids: paleobiogeography, dispersal and environmental relationships. The Korean Journal of Quaternary Research 21(2):49-53 [M. Carrano/M. Carrano]
68688 K. Tsogtbaatar, D. B. Weishampel, D. C. Evans and M. Watabe. 2019. A new hadrosauroid (Dinosauria: Ornithopoda) from the Late Cretaceous Baynshire Formation of the Gobi Desert (Mongolia). PLoS ONE 14(4):e0208480:1-47 [M. Carrano/M. Carrano]
53793 T. Tsubamoto, M. Saneyoshi, K. Tsogtbaatar, T. Chinzorig, P. Khatanbaatar, B. Mainbayar, and S. Suzuki. 2010. Report of the HMNS-MPC Joint Paleontological Expedition in 2008. Hayashibara Museum of Natural Sciences Research Bulletin 3:29-39 [M. Carrano/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]
42289 M. Watabe and S. Suzuki. 2000. Report on the Japan–Mongolia Joint Paleontological Expedition to the Gobi desert, 1993. Hayashibara Museum of Natural Sciences Research Bulletin 1:17-29 [R. Benson/R. Benson/M. Carrano]
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]
42291 W. Watabe and S. Suzuki. 2000. Report on the Japan–Mongolia Joint Paleontological Expedition to the Gobi desert, 1994. Hayashibara Museum of Natural Sciences Research Bulletin 1:30-44 [R. Benson/R. Benson/M. Carrano]