Inadvertent Hills, UCMP V82250 (Triassic of the United States)

Also known as Dinosaur Hill, PFV 40, Fossil Cove, Bolt Quarry, FMNH 83-3, PEFO 85119

Where: Apache County, Arizona (35.0° N, 109.8° W: paleocoordinates 10.7° N, 48.3° W)

• coordinate based on unpublished field data

• outcrop-level geographic resolution

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

• "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).

•5-8 m above Painted Desert Sandstone 1.

• bed-level stratigraphic resolution

Environment/lithology: "floodplain"; mudstone

• "proximal floodplain environment, adjacent to a significant crevasse splay"

Size classes: macrofossils, mesofossils

Collected by A. & R. Preston in 1982; reposited in the FMNH, UCMP

Collection methods: quarrying, surface (float), surface (in situ), mechanical,

• discovered by Ann & Robert Preston

Primary reference: K. Padian. 1986. On the type material of Coelophysis Cope (Saurischia: Theropoda) and a new specimen from the Petrified Forest of Arizona (Late Triassic: Chinle Formation). In K. Padian (ed.), The Beginning of the Age of Dinosaurs: Faunal Change Across the Triassic–Jurassic Boundary. Cambridge University Press, Cambridge 45-60 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 49500: authorized by Matthew Carrano, entered by Matthew Carrano on 18.04.2005, edited by Richard Butler

Creative Commons license: CC BY (attribution)

Taxonomic list

 Unionida - Unionidae
Unionidae indet.6 Rafinesque 1820 freshwater mussel
Gastropoda indet.6 Cuvier 1797 snail
 Dipnoi - Arganodontidae
Arganodus sp.2 Martin 1979 lungfish
 Temnospondyli - Metoposauridae
Apachesaurus gregorii2 Hunt 1993 tetrapod
FMNH, nearly complete skull. UCMP, several dozen centra and lower jaw, plate fragments
 Eosuchia - Doswelliidae
Vancleavea campi4 Long and Murry 1995 archosauromorph
PEFO 34170, caudal centrum; UCMP 152662, femur; UCMP 165196, basioccipital; UCMP 165197, partial ilium; UCMP 165199, centrum
 Saurischia - Coelophysidae
Coelophysis sp.3 Cope 1889 neotheropod
UCMP 129618, posterior portion of a skeleton including most of the pelvic region and hindlimb, "Padian theropod"
 Herrerasauria - Staurikosauridae
Staurikosauridae indet.6 Galton 1977 archosaur
Proximal end of pubis
 Pseudosuchia - Stagonolepididae
Typothorax coccinarum2 Cope 1875 archosaur
UCMP 126950-126952, paramedian and cervical plates. PEFO 4845, cervical centrum
 Pseudosuchia -
Revueltosaurus sp.1 Hunt 1989 archosaur
Revueltosaurus callenderi5 Hunt 1989 archosaur
FMNH PR 1697-1699, three teeth
 Loricata -
Hesperosuchus agilis2 Colbert 1952 crocodilian
UCMP 129740, partial skeleton
 Loricata - Rauisuchidae
Postosuchus kirkpatricki2 Chatterjee 1985 rauisuchid
UCMP, proximal left femur
 Phytosauria - Parasuchidae
"Pseudopalatinae indet." = Mystriosuchini2
"Pseudopalatinae indet." = Mystriosuchini2 Huene 1915 archosaur
UCMP 126726, right squamosal. UCMP 126983, squamosals of two individuals. UCMP 129944, proximal right femur. UCMP 129930, ventral scutes
 Therapsida - Traversodontidae
Traversodontidae indet.2 Huene 1936 therapsid