PBDB Collection

MNA 791, Ward Terrace: Norian, Arizona

List of taxa

Where & when

Geology

Taphonomy & methods

Metadata & references

Taxonomic list

Bivalvia - Unionida - Unionidae

	Unio sp. Philipsson 1788		1 fragment
	MNA N9283, valve fragment
Osteichthyes

	Osteichthyes informal Morphotype A		2 elements
	"Ichthyolith Morphotype A"; MNA V7051, isolated denticles
Reptilia - Rhynchosauridae

	? Rhynchosauridae indet. Cope 1871	Kirby 1993
Reptilia

	Anchisauria indet. Galton and Upchurch 2004		8 elements
	MNA V7253-7260, teeth
	= Archosauriformes indet. Gauthier 1986	Butler et al. 2006
Reptilia - Parasuchidae

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

	cf. Pseudopalatus sp. Mehl 1928	Kirby 1993
	= Pseudopalatus buceros Cope 1881	Spielmann et al. 2007
	recombined as Machaeroprosopus buceros
Reptilia - Shuvosauridae

	cf. Postosuchus sp. Chatterjee 1985		5 elements
	MNA V5598, partial mandible. MNA V5597, partial surangular-prearticular complex. MNA V5608, associated dsarticulated teeth. MNA V6726, distal femur. MNA V5599, partial tibia
	= cf. Chatterjeea sp. Long and Murry 1995	Kirby 1993
	synonym of Shuvosaurus
Reptilia - Sphenosuchidae

	cf. Sphenosuchidae indet. Huene 1922	Kirby 1989	8 elements
	= ? Sphenosuchidae indet. Huene 1922	Kirby 1991
	MNA V7213, proximal tibia. MNA V7225-7231, isolated teeth
Reptilia

	Typothorax coccinarum Cope 1875		1 specimen
	MNA V6711, dermal armor fragments

	? Ceratosauria indet. (Marsh 1884)		1 element
	MNA V7238, ungual
	= Theropoda indet. Marsh 1881	Kirby 1993
Reptilia - Sphenodontidae

	Sphenodontidae indet. Cope 1871		2 elements
	MNA V7056, partial dentary. MNA 7057, partial premaxilla
Amphibia - Temnospondyli - Metoposauridae

	Metoposauridae indet. Watson 1919	Kirby 1989	11 fragments
	MNA 5571, 5582, V7052-7055, cranial fragments. MNA 5573, 5572, pectoral girdle fragments
	= cf. Metoposaurus sp. Lydekker 1890	Kirby 1991
	= cf. Metoposaurus informal sp. A Lydekker 1890	Kirby 1993
	= Metoposauridae indet. Watson 1919	Spielmann et al. 2007

	cf. Metoposaurus informal sp. B Lydekker 1890	Kirby 1993
	= Metoposauridae indet. Watson 1919	Spielmann et al. 2007
Actinopteri - Perleidiformes - Perleididae

	Colobodontidae indet. Stensiö 1916	Kirby 1989	10 fragments
	= Perleididae indet. Brough 1931	Kirby 1991
	MNA V7003-7012, toothplate fragments
Actinopteri - Semionotiformes - Semionotidae

	cf. Semionotidae indet. Woodward 1890	Kirby 1989	600 elements
	= cf. Semionotus sp. Agassiz 1832	Kirby 1991
	MNA V7019-7042 (in part), scales. MNA V7043, 590 scales
Palaeonisciformes - Palaeoniscidae

	cf. Palaeoniscidae indet. Vogt 1852	Kirby 1989	16 elements
	= Turseodus cf. dolorensis Schaeffer 1967	Kirby 1991
	MNA V6866-6875, 6884-6893, flank scales
Palaeonisciformes - Redfieldiidae

	Redfieldiidae indet. Hutchinson 1973
	Scales catalogued under MNA V6957-6995 (some from another locality)
Chondrichthyes - Hybodontiformes - Acrodontidae

	Hybodontidae indet. (Agassiz 1834)	Kirby 1989	4373 elements
	= Reticulodus synergus n. gen., n. sp. Murry and Kirby 2002	Murry and Kirby 2002
	MNA V6059 (holotype), MNA V6060-6061, V6836-6838, 6850-6859, 6846, 4344 (paratypes), crowns. Many additional specimens
Equisetopsida - Araucariaceae

	Araucarioxylon sp. Kraus 1870
see common names

Geography

Country:	United States	State/province:	Arizona	County:	Coconino
Coordinates:	35.8° North, 111.2° West (view map)
Paleocoordinates:	11.7° North, 49.3° West
Basis of coordinate:	estimated from map
Geographic resolution:	small collection

Time

Period:	Triassic	Epoch:	Late/Upper Triassic
Stage:	Norian	10 m.y. bin:	Triassic 4
Key time interval:	Norian
Age range of interval:	227.00000 - 208.50000 m.y. ago

Stratigraphy

Formation:	Chinle	Member:	Owl Rock
Stratigraphic resolution:	member
Stratigraphy comments: Kent et al. 2019: Owl Rock Member surrounds poorly defined Norian-Rhaetian boundary. Kent et al. 2019 state the boundary falls within magnetozone PF1r which corresponds to chron polarity E17 which is approximately 209.5Ma.

Lithology and environment

Primary lithology:	not reported
Environment:	"channel"
Geology comments: "proximal floodbasin" in a 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:	selective quarrying,surface (float),mechanical,field collection
Reason for describing collection:	general faunal/floral analysis

Metadata

Database number:	48423
Authorizer:	M. Carrano, R. Butler	Enterer:	M. Carrano, R. Butler
Modifier:	G. Varnham	Research group:	vertebrate
Created:	2005-03-18 08:09:00	Last modified:	2022-03-07 05:45:59
Access level:	the public	Released:	2005-03-18 08:09:00
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:

19402	ETE	R. J. Butler, L. B. Porro, and A. B. Heckert. 2006. A supposed heterodontosaurid tooth from the Rhaetian of Switzerland and a reassessment of the European Late Triassic record of Ornithischia (Dinosauria). Neues Jahrbuch für Geologie und Paläontologie Monatshefte 2006(10):613-633 [M. Carrano/M. Carrano]
5928	ETE 1709	A. P. Hunt and A. G. Lucas. 1989. Late Triassic vertebrate localities in New Mexico. In S. G. Lucas and A. P. Hunt (eds.), Dawn of the Age of Dinosaurs in the American Southwest, New Mexico Museum of Natural History, Albuquerque 72-101 [A. Behrensmeyer/A. Behrensmeyer/M. Carrano]
79159		D. V. Kent, P. E. Olsen, C. Lepre, C. Rasmussen, R. Mundil, G. E. Gehrels, D. Giesler, R. B. Irmis, J. W. Geissman and W. G. Parker. 2019. Magnetochronology of the Entire Chinle Formation (Norian Age) in a Scientific Drill Core From Petrified Forest National Park (Arizona, USA) and Implications for Regional and Global Correlations in the Late Triassic. Geochemistry, Geophysics, Geosystems [P. Mannion/G. Varnham]
12929	ETE	R. E. Kirby. 1989. Late Triassic vertebrate localities of the Owl Rock Member (Chinle Formation) in the Ward Terrace area of northern Arizona. In S. G. Lucas and A. P. Hunt (eds.), Dawn of the Age of Dinosaurs in the American Southwest, New Mexico Museum of Natural History, Albuquerque 12-28 [M. Carrano/M. Carrano/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]
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]
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]