Rap Hill (PFV 216): Norian, Arizona

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Amphibia - Temnospondyli
Loughney et al. 2011
Amphibia - Temnospondyli - Metoposauridae
Gee and Parker 2018
PEFO 16759, partial skull
Reptilia
Parker and Irmis 2005
Teeth
Reptilia - Parasuchidae
Gee and Parker 2018
Reptilia
2 specimens
PEFO 16749, 16756, osteoderm fragments
see common names

Geography
Country:United States State/province:Arizona
Coordinates: 34.8° North, 109.8° West (view map)
Paleocoordinates:10.3° North, 37.7° West (Wright 2013)
Basis of coordinate:based on nearby landmark
Time
Period: Triassic Epoch: Late Triassic
Stage: Norian 10 m.y. bin: Triassic 4
Key time interval: Norian
Age range of interval: 227 - 208.5 m.y. ago
Stratigraphy
Formation:Chinle Member:Petrified Forest
Stratigraphy comments: Also referred to as Painted Desert Member of the Petrified Forest Formation
Lithology and environment
Primary lithology:gray,green,red claystone
Includes fossils?Y
Lithology description: "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."
Environment:fine channel fill
Geology comments: "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"
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Disassociated minor elements:some
Collection methods and comments
Collection methods:survey of museum collection
Reason for describing collection:taxonomic analysis
Collection method comments: PEFO: Petrified Forest National Park
Metadata
Also known as:RAP Hill
Database number:92827
Authorizer:R. Butler, A. Dunhill, M. Carrano Enterer:R. Butler, M. Carrano, B. Allen
Modifier:M. Carrano Research group:vertebrate
Created:2009-12-01 02:52:32 Last modified:2025-02-22 15:12:02
Access level:the public Released:2009-12-01 02:52:32
Creative Commons license:CC0
Reference information

Primary reference:
31327. S. J. Nesbitt, M. R. Stocker, B. J. Small and A. Downs. 2009. The osteology and relationships of Vancleavea campi (Reptilia: Archosauriformes). Zoological Journal of the Linnean Society 157:814-864 [R. Butler/R. Butler/R. Butler]

Secondary references:

66611 B. M. Gee and W. G. Parker. 2018. Morphological and histological description of small metoposaurids from Petrified Forest National Park, AZ, USA and the taxonomy of Apachesaurus. Historical Biology [A. Dunhill/B. Allen]
78440 K. M. Loughney, D. E. Fastovsky, and W. G. Parker. 2011. Vertebrate fossil preservation in blue paleosols from the Petrified Forest National Park, Arizona, with implications for vertebrate biostratigraphy in the Chinle Formation. Palaios 26(11):700-718 [M. Carrano/M. Carrano/M. Carrano]
15512ETE W. Parker and R. B. Irmis. 2005. Advances in Late Triassic vertebrate paleontology based on new material from Petrified Forest National Park, Arizona. Vertebrate Paleontology in Arizona, New Mexico Museum of Natural History and Science Bulletin 29:45-58 [M. Carrano/K. Maguire/M. Carrano]