AMNH quarry 136, Iren Dabasu: Middle Campanian - Late/Upper Campanian, China
collected by CAE 1923

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia
Alectrosaurus olseni n. gen., n. sp. Gilmore 1933
1 individual
AMNH 6554 (2 measurements)
see common names

Geography
Country:China State/province:Nei Mongol
Coordinates: 43.7° North, 112.0° East (view map)
Paleocoordinates:42.9° North, 100.7° East
Basis of coordinate:estimated from map
Geographic resolution:outcrop
Time
Period:Cretaceous Epoch:Late/Upper Cretaceous
Stage:Campanian 10 m.y. bin:Cretaceous 7
Key time interval:Middle Campanian - Late/Upper Campanian
Age range of interval:83.50000 - 70.60000 m.y. ago
Stratigraphy
Formation:Iren Dabasu
Stratigraphic resolution:bed
Stratigraphy comments: The Iren Dabasu Formation is Early-Middle Campanian according to Xing et al. (2012)
Lithology and environment
Primary lithology: not reported
Environment:fluvial-lacustrine indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:surface (in situ),field collection
Reason for describing collection:taxonomic analysis
Collectors:CAE Collection dates:1923
Collection method comments: coll. G. Olsen and others
Metadata
Also known as:Erlian, Ehrlien, site B, CAE
Database number:49356
Authorizer:M. Carrano Enterer:M. Carrano
Modifier:M. Carrano Research group:vertebrate
Created:2005-04-14 06:54:02 Last modified:2023-07-21 12:50:34
Access level:the public Released:2005-04-14 06:54:02
Creative Commons license:CC BY
Reference information

Primary reference:

13061.ETE C. W. Gilmore. 1933. On the dinosaurian fauna of the Iren Dabasu Formation. Bulletin of the American Museum of Natural History 68(2-3):23-78 [M. Carrano/M. Carrano/M. Carrano]

Secondary references:

85345 T. D. Carr. 2023. A reappraisal of tyrannosauroid fossils from the Iren Dabasu Formation (Coniacian–Campanian), Inner Mongolia, People’s Republic of China. Journal of Vertebrate Paleontology 42(5):e2199817:1-63 [M. Carrano/M. Carrano/M. Carrano]
13181ETE P. J. Currie and D. A. Eberth. 1993. Palaeontology, sedimentology and palaeoecology of the Iren Dabasu Formation (Upper Cretaceous), Inner Mongolia, People's Republic of China. Cretaceous Research 14:127-144 [M. Carrano/M. Carrano/M. Carrano]
13186 B. J. Mader and R. L. Bradley. 1989. A redescription and revised diagnosis of the syntypes of the Mongolian tyrannosaur Alectrosaurus olseni. Journal of Vertebrate Paleontology 9(1):41-55 [M. Carrano/M. Carrano/M. Carrano]
10350 G. S. Paul. 1988. Predatory Dinosaurs of the World. Simon & Schuster, New York 1-464 [M. Carrano/M. Carrano/M. Carrano]
51464 A. Perle. 1977. O pervoy nakhodke Alektrozavra (Tyrannosauridae, Theropoda) iz pozdnego Mela Mongolii [On the first discovery of Alectrosaurus (Tyrannosauridae, Theropoda) in the Late Cretaceous of Mongolia]. Shinzhlekh Ukhaany Akademi Geologiin Khureelen 3(3):104-113 [M. Carrano/M. Carrano]
51224 H. Xing, Y. -M. He, L. Li and D. Xi. 2012. A review of the study of the stratigraphy, sedimentology, and paleontology of the Iren Dabasu Formation, Inner Mongolia. In W. Dong (ed.), Proceedings of the Thirteenth Annual Meeting of the Chinese Society of Vertebrate Paleontology 1-44 [R. Benson/R. Benson]