Shiregin-Gashun [SMGE]: Cenomanian - Santonian, Mongolia
collected by SMGE 1967–1968

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia - Crocodilia
Crocodilia indet. Owen 1842
spelled with current rank as Crocodylia
bones
Reptilia - Spheroolithidae
Dinosauria indet. Owen 1842
10 specimens
1 clutch, prolatocanaliculate eggs plus "dinosaur bones"
    = Spheroolithus sp. Zhao 1979
Mikhailov et al. 1994
S1 group; PIN 2970/3, egg
see common names

Geography
Country:Mongolia State/province:Ovorhangai
Coordinates: 43.9° North, 101.3° East (view map)
Paleocoordinates:44.5° North, 91.7° East
Basis of coordinate:estimated from map
Altitude:1039 meters
Geographic resolution:outcrop
Time
Period:Cretaceous Epoch:Late/Upper Cretaceous
*Period:Late/Upper Cretaceous *Epoch:Gallic
*International age/stage:Cenomanian - Turonian
Key time interval:Cenomanian - Santonian
Age range of interval:100.50000 - 83.60000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Baynshire
Stratigraphic resolution:bed
Stratigraphy comments: = Bayn Shire

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: sandstone
Includes fossils?Y
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Size of fossils:mesofossils
Spatial orientation:life position
Associated major elements:all
Fragmentation:frequent
Temporal resolution:snapshot
Spatial resolution:autochthonous
Collection methods and comments
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Museum repositories:PIN
Collectors:SMGE Collection dates:1967–1968
Collection method comments: egg clutch
Metadata
Also known as:Shiregin Gashoon, Sheregiyn-Gashoon
Database number:13350
Authorizer:M. Carrano Enterer:M. Carrano
Modifier:M. Carrano Research group:vertebrate
Created:2002-03-01 15:29:22 Last modified:2023-08-10 10:29:36
Access level:the public Released:2002-03-01 15:29:22
Creative Commons license:CC BY
Reference information

Primary reference:
61563. A. V. Sochava. 1969. Dinosaur eggs from the Upper Cretaceous of the Gobi Desert. Paleontological Journal 1969(4):517-527 [M. Carrano/M. Carrano]

Secondary references:

14221ETE K. Carpenter and K. Alf. 1994. Global distribution of dinosaur eggs, nests, and babies. In K. Carpenter, K. F. Hirsch, and J. R. Horner (eds.), Dinosaur Eggs and Babies, Cambridge University Press, Cambridge 13-30 [M. Carrano/M. Carrano/M. Carrano]
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]
14217ETE K. Mikhailov, K. Sabath, and S. Kurzanov. 1994. Eggs and nests from the Cretaceous of Mongolia. In K. Carpenter, K. F. Hirsch, and J. R. Horner (eds.), Dinosaur Eggs and Babies, Cambridge University Press, Cambridge 88-115 [M. Carrano/M. Carrano/M. Carrano]
27284ETE K. E. Mikhailov. 1991. Classification of fossil eggshells of amniotic vertebrates. Acta Palaeontologica Polonica 36(2):193-238 [M. Carrano/M. Carrano/M. Carrano]
59875% 37440A. V. Sochava. 1970. Microtexture of dinosaur eggshells from the lower Cretaceous of the northern Gobi. Transactions of the U.S.S.R. Academy of Sciences: Earth Science Sections 192:203-205 [M. Carrano/M. Carrano/M. Carrano]
85552 A. V. Sochava. 1971. Two types of eggshell in Senonian dinosaurs. Paleontological Journal 1971(3):80-88 [M. Carrano/M. Carrano]