Upheaval Dome (Triassic of the United States)

Where: San Juan County, Utah (38.4° N, 109.9° W: paleocoordinates 14.1° N, 47.8° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Blue Mesa Member (Chinle Formation), Norian (228.0 - 208.5 Ma)

• 11.5 m above the base of the Blue Mesa Member. Stagonolepis used to suggest an Adamanian age.

Environment/lithology: fluvial; paleosol/pedogenic, gray, green, yellow, sandy grainstone

• "Fluvial deposit that was subsequently subjected to pedogenic modification"
• "0.7-m-thick, slightly sandy, very well-indurated pisolitic calcrete to calcarenite. The matrix is grayish yellow-green."

Size class: macrofossils

Collected by K. Kietzke; reposited in the NMMNH

Primary reference: A. B. Heckert, S. G. Lucas, and J. D. Harris. 1999. An aetosaur (Reptilia: Archosauria) from the Upper Triassic Chinle Group, Canyonlands National Park, Utah. National Park Service Paleontological Research 4:23-26 [R. Butler/R. Butler]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 92321: authorized by Richard Butler, entered by Richard Butler on 06.11.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Reptilia
 Phytosauria -
Phytosauria indet.
Phytosauria indet. archosaur
Tooth
 Pseudosuchia - Stagonolepididae
Stagonolepis sp.
Stagonolepis sp. Agassiz 1844 aetosaur
NMMNH P-26938, dorsal paramedian scute, tooth, 14 blocks with scattered vertebrae, ribs, and scutes