MNA 791, Ward Terrace: Norian, Arizona
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Equisetopsida
- Araucariaceae
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Araucarioxylon sp.
Kraus 1870
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Osteichthyes
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Osteichthyes informal Morphotype A
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2 elements | |||||||||
"Ichthyolith Morphotype A"; MNA V7051, isolated denticles | ||||||||||
Actinopteri
- Semionotiformes
- Semionotidae
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cf. Semionotidae indet.
Woodward 1890
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Kirby 1989 | 600 elements | ||||||||
= cf. Semionotus sp.
Agassiz 1832
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Kirby 1991 | |||||||||
MNA V7019-7042 (in part), scales. MNA V7043, 590 scales | ||||||||||
Actinopteri
- Perleidiformes
- Perleididae
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Colobodontidae indet.
Stensiö 1916
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Kirby 1989 | 10 fragments | ||||||||
= Perleididae indet.
Brough 1931
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Kirby 1991 | |||||||||
MNA V7003-7012, toothplate fragments | ||||||||||
Palaeonisciformes
- Redfieldiidae
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Redfieldiidae indet.
Hutchinson 1973
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Scales catalogued under MNA V6957-6995 (some from another locality) | ||||||||||
Palaeonisciformes
- Palaeoniscidae
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cf. Palaeoniscidae indet.
Vogt 1852
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Kirby 1989 | 16 elements | ||||||||
= Turseodus cf. dolorensis
Schaeffer 1967
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Kirby 1991 | |||||||||
MNA V6866-6875, 6884-6893, flank scales | ||||||||||
Amphibia
- Temnospondyli
- Metoposauridae
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Metoposauridae indet.
Watson 1919
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Kirby 1989 | 11 fragments | ||||||||
MNA 5571, 5582, V7052-7055, cranial fragments. MNA 5573, 5572, pectoral girdle fragments | ||||||||||
= cf. Metoposaurus sp.
Lydekker 1890
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Kirby 1991 | |||||||||
= cf. Metoposaurus informal sp. A
Lydekker 1890
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Kirby 1993 | |||||||||
= Metoposauridae indet.
Watson 1919
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Spielmann et al. 2007 | |||||||||
cf. Metoposaurus informal sp. B
Lydekker 1890
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Kirby 1993 | |||||||||
= Metoposauridae indet.
Watson 1919
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Spielmann et al. 2007 | |||||||||
Reptilia
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Anchisauria indet.
Galton and Upchurch 2004
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8 elements | |||||||||
MNA V7253-7260, teeth | ||||||||||
= Archosauriformes indet.
Gauthier 1986
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Butler et al. 2006 | |||||||||
Reptilia
- Parasuchidae
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? Pseudopalatus pristinus
Mehl 1928
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Kirby 1993 | |||||||||
= Pseudopalatus buceros
Cope 1881
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Spielmann et al. 2007 | |||||||||
recombined as Machaeroprosopus buceros | ||||||||||
cf. Pseudopalatus sp.
Mehl 1928
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Kirby 1993 | |||||||||
= Pseudopalatus buceros
Cope 1881
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Spielmann et al. 2007 | |||||||||
recombined as Machaeroprosopus buceros | ||||||||||
Reptilia
- Shuvosauridae
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cf. Postosuchus sp.
Chatterjee 1985
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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
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Kirby 1993 | |||||||||
synonym of Shuvosaurus | ||||||||||
Reptilia
- Sphenosuchidae
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cf. Sphenosuchidae indet.
Huene 1922
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Kirby 1989 | 8 elements | ||||||||
= ? Sphenosuchidae indet.
Huene 1922
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Kirby 1991 | |||||||||
MNA V7213, proximal tibia. MNA V7225-7231, isolated teeth | ||||||||||
Reptilia
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Typothorax coccinarum
Cope 1875
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1 specimen | |||||||||
MNA V6711, dermal armor fragments | ||||||||||
? Ceratosauria indet.
(Marsh 1884)
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1 element | |||||||||
MNA V7238, ungual | ||||||||||
= Theropoda indet.
Marsh 1881
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Kirby 1993 | |||||||||
Reptilia
- Rhynchosauridae
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? Rhynchosauridae indet.
Cope 1871
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Kirby 1993 | |||||||||
Reptilia
- Sphenodontidae
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Sphenodontidae indet.
Cope 1871
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2 elements | |||||||||
MNA V7056, partial dentary. MNA 7057, partial premaxilla | ||||||||||
Chondrichthyes
- Hybodontiformes
- Acrodontidae
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Hybodontidae indet.
(Agassiz 1834)
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Kirby 1989 | 4373 elements | ||||||||
= Reticulodus synergus n. gen., n. sp.
Murry and Kirby 2002
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Murry and Kirby 2002 | |||||||||
MNA V6059 (holotype), MNA V6060-6061, V6836-6838, 6850-6859, 6846, 4344 (paratypes), crowns. Many additional specimens | ||||||||||
Bivalvia
- Unionida
- Unionidae
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Unio sp.
Philipsson 1788
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1 fragment | |||||||||
MNA N9283, valve fragment | ||||||||||
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] |