Cope Quarry XII: Early/Lower Tithonian, Colorado
collected by A. Ripley 1877

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia
Eusauropoda indet. Upchurch 1995
Mannion et al. 2021
AMNH FARB 5764a (ulna) [said to be from this locality by Osborn and Mook 1921, but this cannot be confirmed - see McIntosh 1998]
Diplodocoidea indet. (Upchurch 1995)
Mannion et al. 2021
AMNH FARB 5761 (humerus)
Amphicoelias altus n. gen., n. sp. Cope 1877
1 individual
AMNH FARB 5764 - holotype
Reptilia - Camarasauridae
aff. Camarasaurus sp. Cope 1877
Mannion et al. 2021
AMNH FARB 5764 (tooth) and 5764a (scapulocoracoid) [said to be from this locality by Osborn and Mook 1921, but this cannot be confirmed - see McIntosh 1998]
see common names

Geography
Country:United States State/province:Colorado County:Fremont
Coordinates: 38.6° North, 105.2° West (view map)
Paleocoordinates:34.5° North, 52.9° West
Basis of coordinate:estimated from map
Geographic resolution:small collection
Time
Period:Jurassic Epoch:Late/Upper Jurassic
Stage:Tithonian 10 m.y. bin:Jurassic 6
Key time interval:Early/Lower Tithonian
Age range of interval:149.20000 - 146.30000 m.y. ago
Stratigraphy
Formation:Morrison
Stratigraphic resolution:bed
Stratigraphy comments: Brushy Basin Member ?

C5 systems tract, 150.44–149.21 Ma, lower Tithonian, Upper Jurassic (Mannion et al. 2021)
Lithology and environment
Primary lithology: sandstone
Includes fossils?Y
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Degree of concentration:dispersed
Size of fossils:macrofossils
Preservation of anatomical detail:medium
Abundance in sediment:few
Fragmentation:occasional
Temporal resolution:snapshot
Collection methods and comments
Collection methods:selective quarrying,mechanical,field collection
Reason for describing collection:taxonomic analysis
Museum repositories:AMNH
Collectors:A. Ripley Collection dates:1877
Metadata
Also known as:CO-71; Garden Park
Database number:48154
Authorizer:M. Carrano, P. Mannion Enterer:M. Carrano, P. Mannion
Modifier:P. Mannion Research group:vertebrate
Created:2005-03-15 08:53:03 Last modified:2021-06-16 04:45:53
Access level:the public Released:2005-03-15 08:53:03
Creative Commons license:CC BY
Reference information

Primary reference:
33920.ETE E. D. Cope. 1877. On Amphicoelias, a genus of Saurians from the Dakota epoch of Colorado. Proceedings of the American Philosophical Society 17:242-246 [M. Carrano/M. Carrano]

Secondary references:

13268ETE J. J. Ague, K. Carpenter, and J. H. Ostrom. 1995. Solution to the Hallopus enigma?. American Journal of Science 295:1-17 [M. Carrano/M. Carrano/M. Carrano]
12893ETE K. Carpenter. 1998. Vertebrate biostratigraphy of the Morrison Formation near Cañon City, Colorado. Modern Geology 23:407-426 [M. Carrano/M. Carrano/M. Carrano]
15179ETE J. R. Foster. 2003. Paleoecological analysis of the vertebrate fauna of the Morrison Formation (Upper Jurassic), Rocky Mountain region, U.S.A. New Mexico Museum of Natural History and Science Bulletin 23:1-95 [M. Carrano/M. Carrano]
77168 P. D. Mannion, E. Tschopp, and J. A. Whitlock. 2021. Anatomy and systematics of the diplodocoid Amphicoelias altus supports high sauropod dinosaur diversity in the Upper Jurassic Morrison Formation of the USA. Royal Society Open Science 8:210377:1-33 [P. Mannion/P. Mannion]
13281ETE C. E. Turner and F. Peterson. 1999. Biostratigraphy of dinosaurs in the Upper Jurassic Morrison Formation of the Western Interior, U.S.A. In D. D. Gillette (ed.), Vertebrate Paleontology in Utah, Utah Geological Survey Miscellaneous Publication 99-1:77-114 [M. Carrano/M. Carrano/M. Carrano]