PBDB Collection

Milzer locality, MNA 853: Rhaetian, Arizona

List of taxa

Where & when

Geology

Taphonomy & methods

Metadata & references

Taxonomic list

Reptilia

	cf. Ornithischia indet. Seeley 1888	Kirby 1993
	"cf. Ornithischia?"
	= Archosauriformes indet. Gauthier 1986	Irmis et al. 2007

	Vancleavea campi Long and Murry 1995	Nesbitt et al. 2009	1 specimen
	MNA V7205, femur

	Archosauria indet. (Cope 1869)	Spielmann et al. 2007	2 elements
	MNA 5616, 5617, distal femora, MNA V6731, sacral centra (previously referred to cf. Postosuchus)

	? Ceratosauria indet. (Marsh 1884)		3 elements
	MNA 7240, proximal femoral condyle. MNA V7239, ungual. MNA V7241, centrum
	= Theropoda indet. Marsh 1881	Kirby 1993
	= Coelophysoidea indet. Holtz 1994	Spielmann et al. 2007

	Typothorax coccinarum Cope 1875		2 elements
	MNA V5540, V6706, lateral plates

	cf. Poposaurus sp. Mehl 1915	Spielmann et al. 2007	1 element
	MNA V5605, distal tibia

	cf. Postosuchus sp. Chatterjee 1985		60 fragments
	MNA V5600, 5614, 5800, femoral heads. MNA V5618, 6734, distal femora. MNA V5601, V6727, partial tibiae. MNA 5606, partial metatarsal. MNA 5613, four partial tarsi. MNA V5609-5612, 49 vertebral fragments including centra

	Postosuchus sp. Chatterjee 1985	Spielmann et al. 2007	1 element
	MNA V5604, proximal tibia
Reptilia - Shuvosauridae

	Shuvosauridae indet. Chatterjee 1993	Spielmann et al. 2007	2 elements
	MNA V5602, 5603, proximal tibia fragments

	cf. Chatterjeea sp. Long and Murry 1995	Kirby 1993
	synonym of Shuvosaurus
Reptilia - Parasuchidae

	? Pseudopalatus pristinus Mehl 1928	Kirby 1993
	= Pseudopalatus buceros Cope 1881	Spielmann et al. 2007
	recombined as Machaeroprosopus buceros

	? Pseudopalatus sp. Mehl 1928
	MNA V7199-7204, cranial and postcranial fragments
	= Pseudopalatus buceros Cope 1881	Spielmann et al. 2007
	recombined as Machaeroprosopus buceros
Amphibia - Temnospondyli - Metoposauridae

	cf. Metoposaurus sp. Lydekker 1890		8 fragments
	MNA V5576-5578, 6713, 6721, cranial fragments. MNA V5579, clavicle fragments
	= Metoposauridae indet. Watson 1919	Spielmann et al. 2007
Chondrichthyes - Hybodontiformes - Acrodontidae

	Reticulodus synergus Murry and Kirby 2002	Murry and Kirby 2002	291 elements
	SMU, numerous isolated teeth
see common names

Geography

Country:	United States	State/province:	Arizona	County:	Coconino
Coordinates:	35.8° North, 111.2° West (view map)
Paleocoordinates:	14.7° North, 50.4° West
Basis of coordinate:	estimated from map
Geographic resolution:	small collection

Time

Period:	Triassic	Epoch:	Late/Upper Triassic
Stage:	Rhaetian	10 m.y. bin:	Triassic 4
Key time interval:	Rhaetian
Age range of interval:	208.50000 - 201.40000 m.y. ago

Stratigraphy

Formation:	Chinle	Member:	Owl Rock
Stratigraphic resolution:	bed

Lithology and environment

Primary lithology:	mudstone
Includes fossils?	Y
Environment:	fine channel fill
Geology comments: "distributary channel"

Taphonomy

Modes of preservation:	body
Size of fossils:	mesofossils
Disassociated major elements:	some
Disassociated minor elements:	some

Collection methods and comments

Collection methods:	field collection
Reason for describing collection:	taxonomic analysis

Metadata

Also known as:	Ward Terrace
Database number:	84015
Authorizer:	M. Carrano, R. Butler	Enterer:	M. Carrano, R. Butler
Modifier:	M. Carrano	Research group:	vertebrate
Created:	2008-09-15 14:25:54	Last modified:	2012-04-09 16:40:17
Access level:	the public	Released:	2008-09-15 14:25:54
Creative Commons license:	CC BY

Reference information

Primary reference:

31651.

R. E. Kirby. 1991. A vertebrate fauna from the Upper Triassic Owl Rock Member of the Chinle Formation in Northern Arizona, Northern Arizona University. 1-476 [R. Butler/R. Butler]

Secondary references:

32304		R. B. Irmis, W. G. Parker, S. J. Nesbitt and J. Liu. 2007. Early ornithischian dinosaurs: the Triassic record. Historical Biology 19(1):3-22 [R. Butler/R. Butler/M. Carrano]
28148	ETE	R. E. Kirby. 1993. Relationships of Late Triassic basin evolution and faunal replacement in the southwestern United States: perspectives from the upper part of the Chinle Formation in northern Arizona. In S. G. Lucas and M. Morales (eds.), The Nonmarine Triassic. New Mexico Museum of Natural History and Science Bulletin 3:233-242 [M. Carrano/M. Carrano]
14122	ETE	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]
31650		P. A. Murry and R. E. Kirby. 2002. A new hybodont shark from the Chinle and Bull Canyon formations, Arizona, Utah and New Mexico. In A. B. Heckert, S. G. Lucas (eds.), Upper Triassic Stratigraphy and Paleontology, New Mexico Museum of Natural History and Science Bulletin 21:87-106 [R. Butler/R. Butler/R. Butler]
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]
31658		J. A. Spielmann, S. G. Lucas, and A. B. Heckert. 2007. Tetrapod fauna of the Upper Triassic (Revueltian) Owl Rock Formation, Chinle Group, Arizona. In S. G. Lucas, J. A. Spielmann (eds.), The Global Triassic, New Mexico Museum of Natural History and Science Bulletin 41:371-383 [R. Butler/R. Butler]