East Canyon Quarry, Painted Canyon: Late/Upper Oxfordian, Utah
collected by J. S. Newberry 1859; 1989; 2007-

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda
Gastropoda indet. Cuvier 1795
"fossil shells...have the form of Natica, but are probably not susceptible to accurate classification" (Newberry, 1876:92)
Reptilia
Dystrophaeus viaemalae n. gen., n. sp. Cope 1877
Gillette 1993 1 individual
USNM 2364 (3 measurements)
see common names

Geography
Country:United States State/province:Utah County:San Juan
Coordinates: 38.1° North, 109.3° West (view map)
Paleocoordinates:33.2° North, 54.6° West
Basis of coordinate:based on nearby landmark
Geographic resolution:small collection
Time
Period:Jurassic Epoch:Late/Upper Jurassic
Stage:Oxfordian 10 m.y. bin:Jurassic 5
*Period:Late/Upper Jurassic *Epoch:Malm
*International age/stage:Kimmeridgian
Key time interval:Late/Upper Oxfordian
Age range of interval:157.90000 - 154.80000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Morrison Member:Tidwell
Stratigraphic resolution:bed
Stratigraphy comments: within 1 m of lower boundary between Morrison and Wanakah Formations. Bottom of Tidwell Member, which here is within Morrison = Summerville Fm. Earlier papers often cite this as the McElmo Formation; Newberry (1876) called it the "Gypsum formation."
Lithology and environment
Primary lithology: lithified sandstone
Includes fossils?Y
Environment:crevasse splay
Geology comments: overbank
Taphonomy
Modes of preservation:body
Degree of concentration:dispersed
Size of fossils:macrofossils
Associated major elements:all
Temporal resolution:snapshot
Collection methods and comments
Collection methods:selective quarrying,mechanical,field collection
Reason for describing collection:taxonomic analysis
Museum repositories:UNSM
Collectors:J. S. Newberry Collection dates:1859; 1989; 2007-
Collection method comments: Site revisited in 1989 and more of original specimen found and excavated. Originally discovered by J. S. Newberry as part of the Macomb Expedition in 1859.
Metadata
Also known as:Dystrophaeus type, UT-4, Moab
Database number:28360
Authorizer:M. Carrano Enterer:M. Carrano
Modifier:M. Carrano Research group:vertebrate
Created:2003-02-10 10:30:30 Last modified:2023-09-18 13:41:38
Access level:the public Released:2003-02-10 10:30:30
Creative Commons license:CC BY
Reference information

Primary reference:
85800. J. S. Newberry. 1876. Geological Report. In J. N. Macomb (ed.), Report of the Exploring Expedition from Santa Fé, New Mexico, to the Junction of the Grand and Green Rivers of the Great Colorado of the West, in 1859, Under the Command of Capt. J. N. Macomb, Corps of Topographical Engineers (Now Colonel of Engineers); with Geological Report 1-118 [M. Carrano/M. Carrano]

Secondary references:

81841 B. H. Breithaupt. 1994. The first dinosaur discovered in Wyoming. In G. E. Nelson (ed.), Wyoming Geological Association Forty-Fourth Annual Field Conference. Wyoming Geological Association Guidebook 44:15-23 [M. Carrano/M. Carrano/M. Carrano]
85707 B. H. Breithaupt. 1999. The first discoveries of dinosaurs in the American west. In D. D. Gillette (ed.), Vertebrate Paleontology in Utah, Utah Geological Survey Miscellaneous Publication 99-1:59-65 [M. Carrano/M. Carrano]
7794 E. D. Cope. 1877. On a dinosaurian from the Trias of Utah. Proceedings of the American Philosophical Society 16:579-584 [M. Carrano/M. Carrano/M. Carrano]
64482 E. D. Cope. 1877. Report upon the extinct Vertebrata obtained in New Mexico by parties of the Expedition of 1874. Report upon United States Geographical Surveys West of the One Hundredth Meridian, in Charge of First Lieut. Geo. M. Wheeler, Corps of Engineers, U. S. Army, under the Direction of Brig. Gen. A. A. Humphreys, Chief of Engineers, U. S. Army 4:1-370 [E. Vlachos/E. Vlachos/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]
77935% 16020D. D. Gillette. 1993. Type locality and stratigraphic positions of Dystrophaeus viaemalae Cope 1879, the earliest sauropod dinosaur in North America. Journal of Vertebrate Paleontology 13(3, suppl.):37A [M. Carrano/M. Carrano/J. Alroy]
9726 D. D. Gillette. 1996. Stratigraphic position of the sauropod Dystrophaeus viaemalae Cope 1877 and its evolutionary implications. In M. Morales (ed.), The Continental Jurassic. Museum of Northern Arizona Bulletin 60:59-68 [M. Carrano/M. Carrano/M. Carrano]
16875ETE F. v. Huene. 1904. Dystrophaeus viaemalae Cope in neuer Beleuchtung [Dystrophaeus viaemalae Cope in a new light]. Neuen Jahrbuch für Mineralogie, Geologie und Paläontologie 19:319-333 [M. Carrano/M. Carrano]
69417 J. H. Madsen and W. E. Miller. 1979. the fossil vertebrates of Utah, an annotated bibliography. Brigham Young University Geology Studies 26(4):iii-147 [M. Carrano/M. Carrano]
78170 C. C. Mook. 1916. Study of the Morrison Formation. Annals of the New York Academy of Sciences 27:39-191 [M. Carrano/M. Carrano]
50085 B. A. Swanson, V. L. Santucci, S. K. Madsen, A. S. Elder, and J. P. Kenworthy. 2005. Arches National Park paleontological survey. Geological Resources Division Technical Report NPS/NRGRD/GRDTR-05/01 1-36 [M. Carrano/M. Carrano]
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]