Dinosaur Hollow, PFV 20: Norian, Arizona
collected by B. Small, R. Long 1984–1985

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Amphibia - Temnospondyli - Metoposauridae
Long and Murry 1995 1 specimen
PEFO 4848, three centra
Reptilia
Long and Murry 1995
Reptilia - Shuvosauridae
Long and Murry 1995 1 individual
UCMP, partial left and right ilia, coossified proximal ischia, left femur
Loughney et al. 2011
Reptilia
Long and Murry 1995 1 element
UCMP, paramedian plate fragment
Reptilia - Parasuchidae
Long and Murry 1995 1 element
UCMP, well-preserved vertebra
Reptilia
2 individuals
PEFO 10395, partial postcranial skeleton ("Gertie")
Gillette et al. 1986
Long and Murry 1995
see common names

Geography
Country:United States State/province:Arizona County:Apache
Coordinates: 35.1° North, 109.8° West (view map)
Paleocoordinates:10.6° North, 37.6° West (Wright 2013)
Basis of coordinate:based on nearby landmark
Geographic resolution:small collection
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
Stratigraphic resolution:bed
Stratigraphy comments: "Upper Petrified Forest Formation"; now known as the Petrified Forest Member (Woody 2003) or the Painted Desert Member of the Petrified Forest Formation (Heckert & Lucas 2002).
1.5 to 3.1 metres above Painted Desert Sandstone 2; 34 m below Black Forest Tuff
Lithology and environment
Primary lithology: sandstone
Secondary lithology:bioturbation,paleosol/pedogenic,ferruginous,blue calcareous mudstone
Includes fossils?Y
Lithology description: multistorey sandstone sheet with paleosol mudtsone intervals; latter contain intergrown carbonate nodules and ferruginous oxides, calcic horizons, root traces. "Bones are found in a unique, localized bluish pedogenically modified mudstone"
Environment:fine channel fill
Geology comments: two superposed fining-upward sequences capped by reworked sandstone layer (Black Forest Bed). deposition in frequently avulsing, high-sinuosity fluvial system; "channels filled with blue (5RP 6/2 to 10R 4/2) pedogenic mudstone"
Taphonomy
Modes of preservation:body
Degree of concentration:dispersed
Size of fossils:macrofossils
Associated major elements:some
Disassociated major elements:many
Disassociated minor elements:some
Fragmentation:frequent
Collection methods and comments
Collection methods:selective quarrying,surface (float),surface (in situ),mechanical,field collection,survey of museum collection
Reason for describing collection:paleoecologic analysis
Museum repositories:UCMP
Collectors:B. Small, R. Long Collection dates:1984–1985
Metadata
Also known as:UCMP V84260, PEFO 85101, Chinde Mesa, Chinde Point, Gertie
Database number:48546
Authorizer:M. Carrano Enterer:M. Carrano
Modifier:M. Carrano Research group:vertebrate
Created:2005-03-22 19:44:19 Last modified:2025-02-22 15:12:02
Access level:the public Released:2005-03-22 19:44:19
Creative Commons license:CC0
Reference information

Primary reference:
68860. S. Colclazer. 1985. Dawn of the dinosaur. Courier. The National Park Service Newsletter 30(8):1-3 [M. Carrano/M. Carrano]

Secondary references:

64865 D. D. Gillette, S. R. Ash, and R. A. Long. 1986. Paleontology of the Petrified Forest National Park, Arizona. In J. D. Nations, C. M. Conway, & G. A. Swann (eds.), Geology of Central and Northern Arizona. Field Trip Guidebook for Geological Society of America Rocky Mountain Section Meeting 58-69 [M. Carrano/M. Carrano]
17975ETE A. P. Hunt. 1998. Preliminary results of the Dawn of the Dinosaurs Project at Petrified Forest National Park, Arizona. . In V. L. Santucci & L. McClelland (eds.), National Park Service Geologic Resources Division Technical Report NPS/NRGRD/GRDTR-98/01. National Park Service Paleontological Research Volume 3:135-137 [M. Carrano/M. Carrano]
13905ETE A. P. Hunt, S. G. Lucas, A. B. Heckert, R. M. Sullivan, and M. G. Lockley. 1998. Late Triassic dinosaurs from the western United States. Géobios 31(4):511-531 [M. Carrano/M. Carrano/J. Alroy]
17974ETE 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]
15399ETE R. B. Irmis. 2005. The vertebrate fauna of the Upper Triassic Chinle Formation in northern Arizona. In S. J. Nesbitt, W. G. Parker, & R. B. Irmis (eds.), Guidebook to the Triassic Formations of the Colorado Plateau in Northern Arizona: Geology, Paleontology, and History. Mesa Southwest Museum Bulletin 9:63-88 [M. Carrano/M. Carrano/M. Carrano]
14122ETE R. A. Long and P. A. Murry. 1995. Late Triassic (Carnian and Norian) Tetrapods from the Southwestern United States. New Mexico Museum of Natural History and Science Bulletin 4:1-254 [M. Carrano/M. Carrano/P. Wagner]
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]
63170 L. L. Meyer. 1986. D-Day on the Painted Desert. Arizona Highways 62(7):2-13 [M. Carrano/M. Carrano]
58720 P. A. Murry and R. A. Long. 1997. Dockum Group. In P. J. Currie & K. Padian (ed.), Encyclopedia of Dinosaurs 191-193 [M. Carrano/M. Carrano]
16671ETE W. G. Parker. 2002. Correlation of locality numbers for vertebrate fossil sites in Petrified Forest National Park, Arizona. A. B. Heckert & S. G. Lucas (eds.), Upper Triassic Stratigraphy and Paleontology. New Mexico Museum of Natural History and Science Bulletin 21:37-42 [M. Carrano/M. Carrano]
5705ETE 1461F. Therrien and D.E. Fastovsky. 2000. Paleoenvironment of early theropods , Chinle Formation (Late Triassic), Petrified Forest National Park, Arizona. Palaios 15:194-211 [A. Behrensmeyer/A. Behrensmeyer/M. Kosnik]
84543 J. S. Tweet and V. L. Santucci. 2018. An inventory of non-avian dinosaurs from National Park Service areas. In S. G. Lucas & R. M. Sullivan (ed.), Fossil Record 6. New Mexico Museum of Natural History and Science Bulletin 79:703-730 [M. Carrano/M. Carrano]