Mt. Uskuk, Tsagan Nor (AMNH Loc. 10514): Early/Lower Cretaceous, Mongolia
collected 1922

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia
Psittacosaurus sp. Osborn 1923
Andrews 1932 2 specimens
Protiguanodon mongoliense n. gen., n. sp. Osborn 1923
1 specimen
synonym of Psittacosaurus mongoliensis
AMNH 6253
Reptilia - Saurischia
Saurischia indet. Seeley 1888
Andrews 1932 1 specimen
see common names

Geography
Country:Mongolia State/province:Ovorkhangai
Coordinates: 44.7° North, 101.9° East (view map)
Paleocoordinates:45.3° North, 102.3° East
Basis of coordinate:estimated from map
Geographic resolution:small collection
Time
Period:Cretaceous Epoch:Early/Lower Cretaceous
Key time interval:Early/Lower Cretaceous
Age range of interval:145.00000 - 100.50000 m.y. ago
Stratigraphy
Formation:Öösh
Stratigraphic resolution:bed
Stratigraphy comments: originally Ondai Sair Fm.
Lithology and environment
Primary lithology: not reported
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Degree of concentration:dispersed
Size of fossils:macrofossils
Preservation of anatomical detail:good
Articulated whole bodies:some
Associated major elements:some
Disassociated major elements:some
Disassociated minor elements:some
Fragmentation:occasional
Collection methods and comments
Collection methods:selective quarrying,surface (float),surface (in situ),mechanical,field collection
Reason for describing collection:taxonomic analysis
Museum repositories:AMNH
Collection dates:1922
Metadata
Also known as:Usskuk
Database number:48939
Authorizer:M. Carrano Enterer:M. Carrano
Modifier:M. Carrano Research group:vertebrate
Created:2005-04-04 11:40:17 Last modified:2023-08-01 15:37:39
Access level:the public Released:2005-04-04 11:40:17
Creative Commons license:CC BY
Reference information

Primary reference:

9632. H. F. Osborn. 1923. Two Lower Cretaceous dinosaurs of Mongolia. American Museum Novitates 95:1-10 [M. Carrano/M. Carrano/M. Carrano]

Secondary references:

13060ETE R. C. Andrews. 1932. The New Conquest of Central Asia: A Narrative of the Explorations of the Central Asiatic Expeditions ni Mongolia and China, 1921-1930. Natural History of Central Asia 1:1-678 [M. Carrano/M. Carrano/M. Carrano]
64010 Z.-W. Cheng. 1982. Páxíng lèi {Reptilia}. Mesozoic Stratigraphic Paleontology in the Guyang Coal-Bearing Basin, Inner Mongolia 123-136 [M. Carrano/M. Carrano]
13076ETE H. F. Osborn. 1924. The discovery of an unknown continent. Natural History 24(2):133-149 [M. Carrano/M. Carrano/M. Carrano]
62553 A. K. Rozhdestvensky. 1955. Novyye dannyye o psittakozavrakh – melovykh ornitopodakh [New data on psittacosaurs — Cretaceous ornithopods]. Voprosy Geologii Asii 2:783-788 [M. Carrano/M. Carrano]
14891ETE C.-C. Young. 1958. The dinosaurian remains of Laiyang, Shantung. Palaeontologia Sinica, New Series C, Whole Number 42(16):1-138 [M. Carrano/M. Carrano]