upper end, Gilbert Creek: Late/Upper Maastrichtian, Montana
collected by P. Kaisen 1906

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia
Leidyosuchus sternbergii Gilmore 1910
Gilmore 1910 1 specimen
recombined as Borealosuchus sternbergii
AMNH 5898 (1 measurement)
Reptilia - Ankylosauridae
Ankylosaurus magniventris n. gen., n. sp. Brown 1908
1 specimen
AMNH 5895 (8 measurements)
Reptilia - Hadrosauridae
Anatosaurus sp. Lull and Wright 1942
Lull and Wright 1942 2 specimens
synonym of Edmontosaurus
AMNH 5896, 5897
see common names

Geography
Country:United States State/province:Montana County:Garfield
Coordinates: 47.6° North, 106.6° West (view map)
Paleocoordinates:54.3° North, 79.6° West
Basis of coordinate:stated in text
Altitude:804 meters
Geographic resolution:small collection
Time
Period:Cretaceous Epoch:Late/Upper Cretaceous
Stage:Maastrichtian 10 m.y. bin:Cretaceous 8
*Period:Late/Upper Cretaceous *Epoch:Senonian
Key time interval:Late/Upper Maastrichtian
Age range of interval:70.60000 - 66.00000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Hell Creek
Stratigraphic resolution:group of beds
Stratigraphy comments: 61-67 m below K-T boundary
Lithology and environment
Primary lithology: not reported
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Preservation of anatomical detail:good
Articulated whole bodies:some
Temporal resolution:snapshot
Collection methods and comments
Collection methods:selective quarrying,mechanical,field collection
Collection size:1 individuals
Reason for describing collection:taxonomic analysis
Museum repositories:AMNH
Collectors:P. Kaisen Collection dates:1906
Metadata
Also known as:Ankylosaurus type
Database number:11931
Authorizer:M. Carrano Enterer:M. Carrano
Modifier:G. Varnham Research group:vertebrate
Created:2001-09-19 10:02:53 Last modified:2022-02-01 07:55:36
Access level:the public Released:2001-09-19 10:02:53
Creative Commons license:CC BY
Reference information

Primary reference:

4210.5% 52400B. Brown. 1908. The Ankylosauridae, a new family of armored dinosaurs from the Upper Cretaceous. Bulletin of the American Museum of Natural History 24(12):187-201 [M. Carrano/M. Carrano/M. Carrano]

Secondary references:

71135 V. M. Arbour and P. J. Currie. 2011. Tail and pelvis pathologies of ankylosaurian dinosaurs. Historical Biology 23(4):375-390 [M. Carrano/M. Carrano]
64040 V. M. Arbour and P. J. Currie. 2016. Systematics, phylogeny and palaeobiogeography of the ankylosaurid dinosaurs. Journal of Systematic Palaeontology 14(5):385-444 [G. Lloyd/G. Lloyd/M. Carrano]
71136 V. M. Arbour and J. C. Mallon. 2017. Unusual cranial and postcranial anatomy in the archetypal ankylosaur Ankylosaurus magniventris. Facets 2(2):764-794 [M. Carrano/M. Carrano]
11822ETE K. Carpenter. 2004. Redescription of Ankylosaurus magniventris Brown 1908 (Ankylosauridae) from the Upper Cretaceous of the Western Interior of North America. Canadian Journal of Earth Sciences 41:961-986 [M. Carrano/M. Carrano/M. Carrano]
17480ETE W. P. Coombs. 1978. The families of the ornithischian dinosaur order Ankylosauria. Palaeontology 21(1):143-170 [M. Carrano/M. Carrano/M. Carrano]
13456ETE C. W. Gilmore. 1910. Leidyosuchus sternbergii, a new species of crocodile from the Ceratops Beds of Wyoming. Proceedings of the United States National Museum 38(1762):485-502 [M. Carrano/M. Carrano/J. Alroy]
62949 E. Hennig. 1915. Fossilium Catalogus. I: Animalia. Pars 9: Stegosauria 1-16 [M. Carrano/M. Carrano/M. Carrano]
12319ETE R. S. Lull and N. E. Wright. 1942. Hadrosaurian dinosaurs of North America. Geological Society of America Special Paper 40:1-242 [M. Carrano/M. Carrano/M. Carrano]