Warner Valley tracksite (WVT): Early/Lower Hettangian, Utah
collected by G. Delsignore 1982, 2010

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia - Moyenisauropodidae
? Megalosauridae indet. (Fitzinger 1843)
1 specimen
complete trackway
    = ? Kayentapus sp. Welles 1971
Miller et al. 1989
    = Anomoepus sp. Hitchcock 1848
Milner et al. 2011
Reptilia - Theropoda - Grallatoridae
? Coelophysis sp.
16 specimens
"several individuals"
    = cf. Grallator sp. Hitchcock 1858
Miller et al. 1989
    = Grallator sp. Hitchcock 1858
Lockley and Hunt 1995
Plateosauridae indet. Marsh 1895
4 individuals
    = Eubrontes sp. Hitchcock 1845
Miller et al. 1989
see common names

Geography
Country:United States State/province:Utah County:Washington
Coordinates: 37.0° North, 113.4° West (view map)
Paleocoordinates:17.6° North, 52.5° West
Basis of coordinate:stated in text
Altitude:963
Geographic resolution:small collection
Time
Period:Jurassic Epoch:Early/Lower Jurassic
Stage:Hettangian 10 m.y. bin:Jurassic 1
Key time interval:Early/Lower Hettangian
Age range of interval:201.40000 - 199.50000 m.y. ago
Stratigraphy
Geological group:Glen Canyon Formation:Kayenta Member:Springdale Sandstone
Stratigraphic resolution:group of beds
Stratigraphy comments: Most of the Moenave Formation is the Dinosaur Canyon Member. In the Moenave type section, near Tuba City, Arizona, all of the Moenave section is Dinosaur Canyon Member, as it is throughout the Moenave outcrop belt along the Echo Cliffs and Ward's Terrace of northern Arizona. However, north of the Grand Canyon in Arizona and in southwestern Utah, the upper part of the Moenave Formation is lacustrine strata. These strata are the Whitmore Point Member.
Lucas et al. (2011: Palaeo3 302: 194-205) proposed, on the basis of multiple lines of biostratigraphic evidence, that the Triassic–Jurassic boundary is placed within the middle part of the Whitmore Point Member of the Moenave Formation where this member is present, and high in the Dinosaur Canyon Member elsewhere. The "Whitmore Point assemblage" of vertebrate taxa, earliest Jurassic (Hettangian) in age. The underlying "Dinosaur Canyon assemblage", is latest Triassic (Rhaetian) in age.
Reassigned to Springdale Member in Lucas & Tanner 2006.
It is not clear at what level in the Dinosaur Canyon these tracks are from, and so a Rhaetian–Hettangian age is assigned at present.
Five track-bearing beds in lower part of formation.
Lithology and environment
Primary lithology:fine,red lithified sandstone
Secondary lithology:red or brown mudstone
Includes fossils?Y
Lithology description: fine-grained, well-sorted reddish sandstone with micro-crossbedding and a mittling of white inclusions high in CaCO3. The layers immediately above and beneath are reach reddish-brown shale/mudstone. All sediment layers who slightly undulating surfaces with minor cut and fill structures.
Environment:"floodplain"
Geology comments: Lower floodplain
Taphonomy
Modes of preservation:mold/impression,trace
Size of fossils:macrofossils
Spatial orientation:life position
Associated major elements:many
Temporal resolution:snapshot
Spatial resolution:autochthonous
Collection methods and comments
Collection excludes:all macrofossils
Collection methods:surface (in situ),observed (not collected)
Reason for describing collection:general faunal/floral analysis
Collectors:G. Delsignore Collection dates:1982, 2010
Collection method comments: Discovered by Gary Delsignore of Cedar City in 1982
Metadata
Database number:52153
Authorizer:M. Carrano Enterer:K. Maguire, M. Carrano
Modifier:M. Carrano Research group:vertebrate
Created:2005-07-28 10:19:31 Last modified:2022-12-02 14:36:51
Access level:the public Released:2005-07-28 10:19:31
Creative Commons license:CC BY
Reference information

Primary reference:
55921. W. E. Miller, B. B. Britt, and K. L. Stadtman. 1986. Theropod and prosauropod trackways from the Moenave Formation of southwestern Utah. In D. D. Gillette (ed.), First International Symposium on Dinosaur Tracks and Traces, Abstracts with Program 21 [M. Carrano/M. Carrano]

Secondary references:

81478 T. A. Birthisel, A. R. C. Milner, L. Scott, S. Hartmann, I. Picat and D. Ferris-Rowley. 2011. Preservation, management, and reinterpretation of an Early Jurassic dinosaur tracksite in Warner Valley, Washington County, Utah. In T. Olstad & A. K. Aase (ed.), Proceedings of the 9th Conference on Fossil Resources, Kemmerer, WY. Brigham Young University Geology Studies 49(A):3-4 [M. Carrano/M. Carrano]
61886 M. G. Lockley and A. P. Hunt. 1995. Dinosaur Tracks and Other Fossil Footprints of the Western United States xxi-338 [M. Carrano/M. Carrano]
65479 S. G. Lucas and L. H. Tanner. 2006. The Springdale Member of the Kayenta Formation, Lower Jurassic of Utah-Arizona. In J. D. Harris, S. G. Lucas, J. A. Spielmann, M. G. Lockley, A. R. C. Milner, & J. I. Kirkland (eds.), The Triassic-Jurassic Terrestrial Transition. New Mexico Museum of Natural History and Science Bulletin 37:71-76 [M. Carrano/M. Carrano]
14018ETE W. E. Miller, B. B. Britt, and K. L. Stadtman. 1989. Tridactyl trackways from the Moenave Formation of southwestern Utah. In D. D. Gillette and M. G. Lockley (eds.), Dinosaur Tracks and Traces. Cambridge University Press, Cambridge 209-215 [M. Carrano/K. Maguire/M. Carrano]
78695 A. R. C. Milner, T. A. Birthisel, J. I. Kirkland, B.H. Breithaupt, N. A. Matthews, M. G. Lockley, V. L. Santucci, S. Z. Gibson, D. D. DeBlieux, M. Hurlbut, J. D. Harris and P. E. Olsen. 2011. Tracking Early Jurassic dinosaurs across southwestern Utah and the Triassic-Jurassic transition. In J. W. Bonde & A. R. C. Milner (ed.), Field Trip Guide Book, 71st Annual Meeting of the Society of Vertebrate Paleontology Paris Las Vegas, Las Vegas, Nevada, November 2-5, 2011. Nevada State Museum Paleontological Papers 1:1-107 [M. Carrano/M. Carrano/M. Carrano]