Purgatoire River tracksite, Unit B1: Kimmeridgian - Tithonian, Colorado
collected by Bird, Lockley 1935, 1938, 1983–1985

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Polypodiopsida - Equisetales - Equisetaceae
Equisetum sp. Linnaeus 1753
Prince and Lockley 1989
Gastropoda
Gastropoda indet. Cuvier 1795
Lockley et al. 1986
Bivalvia - Unionida - Unionidae
Unio sp. Philipsson 1788
Prince 1983
    = Unionidae indet. Rafinesque 1820
Lockley et al. 1984
Reptilia
Sauropoda indet. Marsh 1878
Prince 1983
Reptilia - Theropoda
Theropoda indet. Marsh 1881
Prince 1983
see common names

Geography
Country:United States State/province:Colorado County:Otero
Coordinates: 37.5° North, 103.7° West (view map)
Paleocoordinates:32.8° North, 51.0° West
Basis of coordinate:based on nearby landmark
Geographic resolution:small collection
Time
Period:Jurassic Epoch:Late/Upper Jurassic
Key time interval:Kimmeridgian - Tithonian
Age range of interval:154.80000 - 145.00000 m.y. ago
Stratigraphy
Formation:Morrison Member:Unit B
Stratigraphic resolution:bed
Lithology and environment
Primary lithology: argillaceous lime mudstone
Includes fossils?Y
Lithology description: "argillaceous micrites"
Environment:coastal indet.
Geology comments: Tracks are at the top of the shoreline facies beds.
Taphonomy
Modes of preservation:mold/impression,trace
Size of fossils:macrofossils
Spatial orientation:life position
Abundance in sediment:abundant
Temporal resolution:snapshot
Spatial resolution:autochthonous
Collection methods and comments
Collection methods:observed (not collected)
Reason for describing collection:biostratigraphic analysis
Collectors:Bird, Lockley Collection dates:1935, 1938, 1983–1985
Collection method comments: site discovered by Ridennoure and R. Owens
Metadata
Also known as:Purgatory River, Picketwire
Database number:52917
Authorizer:M. Carrano Enterer:K. Maguire, M. Carrano
Modifier:M. Carrano Research group:vertebrate
Created:2005-08-26 13:15:47 Last modified:2022-10-24 12:51:02
Access level:the public Released:2005-08-26 13:15:47
Creative Commons license:CC BY
Reference information

Primary reference:
36701.ETE J. S. MacClary. 1938. Dinosaur trails of Purgatory. Scientific American 158(1):72 [M. Carrano/M. Carrano]

Secondary references:

42864 R. T. Bird. 1939. [An explanation of the distinction to be observed among dinosaur tracks]. Natural History 43(4):245 [M. Carrano/M. Carrano]
65433 K. L. Conrad, M. G. Lockley, and N. K. Prince. 1987. Triassic and Jurassic vertebrate-dominated trace fossil assemblages of the Cimarron Valley region: implications for paleoeology and biostratigraphy. In S. G. Lucas & A. P. Hunt (ed.), New Mexico Geological Society 38th Annual Fall Field Conference, Northeastern New Mexico. New Mexico Geological Society Guidebook 38:127-138 [M. Carrano/M. Carrano]
65404 J. R. Foster and M. G. Lockley. 2006. The vertebrate ichnological record of the Morrison Formation (Upper Jurassic, North America). In J. R. Foster, S. G. Lucas (eds.), Paleontology and Geology of the Upper Jurassic Morrison Formation. New Mexico Museum of Natural History and Science Bulletin 36:203-216 [M. Carrano/M. Carrano]
65442 A. P. Hunt and S. G. Lucas. 2006. Tetrapod ichnofacies of the Upper Jurassic Morrison Formation, western United States. In J. R. Foster, S. G. Lucas (eds.), Paleontology and Geology of the Upper Jurassic Morrison Formation. New Mexico Museum of Natural History and Science Bulletin 36:217-222 [M. Carrano/M. Carrano]
63566 M. G. Lockley. 1986. A Guide to Dinosaur Tracksites of the Colorado Plateau and American Southwest. University of Colorado at Denver Geology Department Magazine, Special Issue 1:1-56 [M. Carrano/M. Carrano/M. Carrano]
82919 M. G. Lockley. 1992. La dinoturbaciion y el fenomeno de la alteración del sedimento por pisadas de vertebrados en ambientes antiguos []. In J. L. Sanz & A. D. Buscalioni (ed.), Los Dinosaurios y Su Entorno Biotico: Actas del Segundo Curso de Paleontologia in Cuenca 269-296 [M. Carrano/M. Carrano]
65420 M. G. Lockley, K. J. Houck, and N. K. Prince. 1986. North America's largest dinosaur trackway site: implications for Morrison Formation paleoecology. Geological Society America Bulletin 97:1163-1176 [M. Carrano/M. Carrano]
64681 M. G. Lockley and N. K. Prince. 1983. Dinosaurs make a BIG impression. Geology Department Magazine, University of Colorado Denver 2:12-14 [M. Carrano/M. Carrano]
64091 M. G. Lockley, N. K. Prince, K. Houck and K. Carpenter. 1984. Reconstruction of a Late Jurassic lacustrine ecosystem. 37th Annual Meeting, Rocky Mountain Section. Geological Society of America Abstracts with Programs 16(4):228 [M. Carrano/M. Carrano]
36702ETE J. S. MacClary. 1939. Mysterious steps in Purgatory. Natural History 43:120 [M. Carrano/M. Carrano]
56009 N. K. Prince. 1983. Late Jurassic dinosaur trackways from SE Colorado. Geology Department Magazine 2:15-19 [M. Carrano/M. Carrano]
14283ETE N. K. Prince and M. G. Lockley. 1989. The sedimentology of Purgatoire tracksite region, Morrison Formation of southeastern Colorado. In D. D. Gillette & M. G. Lockley (ed.), Dinosaur Tracks and Traces 155-163 [M. Carrano/K. Maguire/M. Carrano]