PBDB Collection

West Moenkopi Plateau (MNA 219) (Jurassic to of the United States)

Also known as Ward Terrace

Where: Coconino County, Arizona (35.7° N, 111.0° W: paleocoordinates 19.3° N, 49.8° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Silty Facies Member (Kayenta Formation), Sinemurian to Sinemurian (199.3 - 182.7 Ma)

• middle part of formation

• bed-level stratigraphic resolution

Environment/lithology: wet floodplain; siltstone and lithified, red, silty sandstone

• paleoenvironment described as including "southwestardly flowing rivers, rising from highlands...and meandering across a broad alluvial plain into low-lying marshes."

• Fluvial sandstones, silts and claystones, predominately red in color. There are also local deposits of silicified limestones, and clay pellet conglomerates. These sediments are characteristically flat-bedded and in places they show cross-laminations. Moreover it is obvious that sand dunes occurred in the western and northwestern extend of the exposures...Two facies are recognized...at its type locality, a sandstone facies...to the southwest [it] increases rapidly in thickness and silt content. About 75 miles southwest of Kayenta...the formation is represented by a silty facies which is markedly different in outcrop character from the sandstone facies.

Size class: macrofossils

Preservation: trace

Collection methods: quarrying, mechanical,

Primary reference: E. H. Colbert. 1981. A primitive ornithischian dinosaur from the Kayenta Formation of Arizona. Museum of Northern Arizona Bulletin 53:1-61 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 13279: authorized by Matthew Carrano, entered by Matthew Carrano on 13.02.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

Reptilia
Ornithischia -	Scutellosaurus lawleri n. gen. n. sp. Scutellosaurus lawleri n. gen. n. sp. Colbert 1981 ornithischian MNA P1.175 (= MNA.v.175), almost complete skeleton (holotype)