Also known as Ward Terrace
Where: Coconino County, Arizona (35.9° N, 111.2° W: paleocoordinates 15.0° N, 50.5° W)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Dinosaur Canyon Member (Moenave Formation), Rhaetian to Rhaetian (208.5 - 199.3 Ma)
• 40 m above base of member.
•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.
•Because the stratigraphic position of this site within the Moenave is unclear, a Rhaetian–Hettangian age is given.
• bed-level stratigraphic resolution
Environment/lithology: interdune; bioturbated, brown, red, white, calcareous sandstone and bioturbated, brown, red, white, blue sandstone
Size class: macrofossils
Preservation: mold/impression, trace
Collected by B. Brown, R. T. Bird in 1934
Collection methods: surface (in situ), peel or thin section,
• more than 300 tracks belonging to 34 trackways
Primary reference: S. K. Madsen. 1986. The rediscovery of dinosaur tracks near Cameron, Arizona. In D. D. Gillette (ed.), First International Symposium on Dinosaur Tracks and Traces, Abstracts with Program 20 [M. Carrano/M. Carrano]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 38886: authorized by Matthew Carrano, entered by Matthew Carrano on 13.05.2004
Creative Commons license: CC BY (attribution)