Yagaan Khovil [HMNS-GIN]: Maastrichtian, Mongolia
collected by HMNS-GIN 1998, 2000, 2007

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia - Avetheropoda
Carnosauria indet. (Huene 1920)
Saneyoshi et al. 2010
Reptilia
Avimimus sp. Kurzanov 1981
Watabe and Tsogtbaatar 2004 11 individuals
partial skeletons and isolated bones (at least 2 individuals), 000810 YK Avimimus UJ1, UJ2; 070624 YK SZK, 070628 YK ORKH
    = Avimimus portentosus Kurzanov 1981
Czepiński 2020
Reptilia - Tyrannosauridae
Tyrannosauridae indet. Osborn 1906
Watabe and Tsogtbaatar 2004
a caudal vertebra of a large carnosaur, 2 metatarsals, a femur, a vertebra, 1 rib and a supraorbital were collected. The bite marks were recognized on the bone surface of the metatarsal and rib
Reptilia - Dendroolithidae
Dendroolithidae indet. Zhao and Li 1988
Watabe and Tsogtbaatar 2004
Reptilia - Ornithomimidae
Ornithomimidae indet. Marsh 1890
Watabe and Tsogtbaatar 2004 1 individual
partial skeleton; 000811 YK-C BON Ornithomimid
Reptilia - Elongatoolithidae
Elongatoolithidae indet. Zhao 1975
Watabe and Tsogtbaatar 2004
dinosaur eggshell fragments (elongatoolithid and spheroolithid)
Reptilia - Spheroolithidae
Spheroolithidae indet. Zhao 1979
Watabe and Tsogtbaatar 2004
dinosaur eggshell fragments (elongatoolithid and spheroolithid)
Reptilia
? Sauropoda indet. (Marsh 1878)
1 individual
large sacral vertebrae
Sauropoda indet. (Marsh 1878)
Watabe and Tsogtbaatar 2004 1 specimen
rib
Testudinata indet. (Oppel 1811)
1 specimen
000810 YK-N SZK Turtle
? Mongolochelys sp. Khosatzky 1997
Watabe and Tsogtbaatar 2004
Reptilia - Testudines - Lindholmemydidae
Lindholmemydidae indet. Chkhikvadze 1970
Suzuki and Narmandakh 2004 9 specimens
shell fragments
cf. Mongolemys sp. Khosatzky and Mlynarski 1971
Watabe and Tsogtbaatar 2004
"Mongolemys-like turtle"
Reptilia - Testudines - Trionychidae
Watabe and Tsogtbaatar 2004 6 specimens
    = Trionychidae indet. Gray 1825
Suzuki and Narmandakh 2004
shell fragments
Bivalvia
Bivalvia indet. Linnaeus 1758
see common names

Geography
Country:Mongolia State/province:Omnogov
Coordinates: 44.1° North, 102.7° East (view map)
Paleocoordinates:42.0° North, 91.4° East
Basis of coordinate:stated in text
Altitude:1286
Geographic resolution:outcrop
Time
Period:Cretaceous Epoch:Late/Upper Cretaceous
Stage:Maastrichtian 10 m.y. bin:Cretaceous 8
Key time interval:Maastrichtian
Age range of interval:72.10000 - 66.00000 m.y. ago
Stratigraphy
Formation:Nemegt
Stratigraphic resolution:group of beds
Stratigraphy comments: questionable formation assignment. Lower part of section
Lithology and environment
Primary lithology: mudstone
Secondary lithology:fine,red sandstone
Includes fossils?Y
Includes fossils?Y
Lithology description: "alternation of pale red fine sandstone and red mudstone"
Environment:fluvial indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,mesofossils
Preservation of anatomical detail:good
Fragmentation:frequent
Collection methods and comments
Collection excludes:some macrofossils
Collection methods:selective quarrying,surface (float),surface (in situ),mechanical,field collection
Reason for describing collection:general faunal/floral analysis
Collectors:HMNS-GIN Collection dates:1998, 2000, 2007
Taxonomic list comments:JMJPE visited this locality in 1998, and discovered fragments of turtle skeletons, large sacral vertebrae, bivalves and eggshells. Many dinosaur footprints (those of a hadrosaur) were also found.
Metadata
Database number:108344
Authorizer:M. Carrano, R. Benson Enterer:M. Carrano, R. Benson
Modifier:M. Carrano Research group:vertebrate
Created:2011-04-28 06:51:18 Last modified:2022-07-29 14:33:50
Access level:the public Released:2011-04-28 06:51:18
Creative Commons license:CC BY
Reference information

Primary reference:
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]

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]
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]
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]
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]
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]