Jeremiah's Perch, PFV 278 (Triassic of the United States)

Where: Apache County, Arizona (35.1° N, 109.8° W: paleocoordinates 10.8° N, 48.3° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Petrified Forest Member (Chinle Formation), Norian (228.0 - 208.5 Ma)

• also listed as Painted Desert Member of Petrified Forest Fm.

• bed-level stratigraphic resolution

Environment/lithology: fine channel fill; gray, green, red claystone

• "The Jeremiah’s Perch and RAP Hill sites are developed in two hydromorphic pedofacies that represent zones of groundwater saturation and fluctuation, respectively, associated with floodplain environments. The fossiliferous layers fill localized depressions in the top of a thick succession of fine-grained facies interpreted as of near-channel origin and likely represent shallow floodplain ponds, perhaps associated with abandoned channels"
• "The fossiliferous layers are laminated light greenish gray (5GY 7/1) claystone, grading upward into variegated light greenish gray, gray (N/5 to N/6), and red (10R 5/1 to 10R 5/2) claystone. These colors are typically produced as reduced iron and manganese are removed during prolonged saturation of sediment."

Size class: macrofossils

Collection methods: quarrying, surface (in situ),

• Specimen has never been completely excavated

Primary reference: A. P. Hunt and J. Wright. 1999. New discoveries of Late Triassic dinosaurs from Petrified Forest National Park, Arizona. In V. L. Santucci & L. McClelland (eds.), National Park Service Geologic Resources Division Technical Report NPS/NRGRD/GRDTR-99/03. National Park Service Paleontological Research Volume 4:96-100 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 57687: authorized by Matthew Carrano, entered by Kaitlin Maguire on 16.12.2005, edited by Matthew Carrano and Bryan Gee

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Reptilia
 Dinosauromorpha -
Dinosauriformes indet.2
Dinosauriformes indet.2 Novas 1992 ornithodiran
PEFO 46207, right scapulocoracoid
 Theropoda - Coelophysidae
Coelophysidae indet.1
Coelophysidae indet.1 Paul 1988 coelophysoid
 Pseudosuchia -
Revueltosaurus callenderi
Revueltosaurus callenderi Hunt 1989 aetosaur
1Loughney et al. 2011; 2Marsh and Parker 2020