Canjilon Quarry, UCMP V2816: Norian, New Mexico
collected by C. L. Camp, R. Arrias, H. Anderson, G. Barrington, & S. P. Welles 1928–1933, 1960, 1999-

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Postosuchus kirkpatricki Chatterjee 1985
Long and Murry 1995 1 specimen
GR 1028, femur
    = Stagonolepididae indet.
Nesbitt and Stocker 2008
Reptilia
Archosauria indet. (Cope 1869)
Nesbitt and Stocker 2008 1 specimen
UCMP 122365. vertebra
Reptilia - Parasuchidae
Pseudopalatus pristinus Mehl 1928
Long and Murry 1995 6 specimens
recombined as Machaeroprosopus pristinus
UCMP 27231, 27234, 27235, 34245, 34249, 34251, skulls and skeletons
Arribasuchus buceros (Cope 1881)
Long and Murry 1995 5 specimens
recombined as Machaeroprosopus buceros
UCMP V27228, 2816, 34246, 34250, 34258, skulls
Reptilia
Typothorax coccinarum Cope 1875
Zeigler et al. 2003 4 specimens
UCMP 34255, 34248, 34259, partial skeletons. UCMP 34277, paramedian osteoderm
Paracrocodylomorpha indet. Parrish 1993
Nesbitt and Stocker 2008 1 specimen
UCMP 152644, proximal femur
Reptilia - Theropoda
Theropoda indet. Marsh 1881
Nesbitt and Stocker 2008 2 specimens
UCMP 152645, partial skeleton. ?UCMP unnumbered, dorsal vertebra
Reptilia
Vancleavea sp. Long and Murry 1995
Hunt et al. 2002 1 specimen
GR 148, osteoderm
    = Vancleavea campi Long and Murry 1995
Nesbitt et al. 2009
Amphibia - Temnospondyli
Stereospondyli indet. von Zittel 1887
Nesbitt and Stocker 2008 1 specimen
UCMP 122455, intercentrum
Actinopterygii
Actinopterygii indet. Cope 1887
Nesbitt and Stocker 2008
UCMP 63920, articulated scales
see common names

Geography
Country:United States State/province:New Mexico County:Rio Arriba
Coordinates: 36.3° North, 106.5° West (view map)
Paleocoordinates:11.5° North, 45.4° West
Basis of coordinate:unpublished field data
Altitude:2164 meters
Geographic resolution:outcrop
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:Petrified Forest
Local section:Chinle-NMex Local bed:12 m
Local order:bottom to top
Stratigraphic resolution:bed
Stratigraphy comments: described as "Revueltan" age, Norian; 90 m below contact with Jurassic Entrada Sandstone, 30.8 m below the contact with the Rock Point Member
Lithology and environment
Primary lithology:paleosol/pedogenic,bentonitic,green,red silty mudstone
Secondary lithology:green conglomerate
Includes fossils?Y
Includes fossils?Y
Lithology description: "bentonitic mudstones that sit just above or are interlayered with an intraformational conglomerate" "purple, red and green mottled mudstone that is locally silty and includes scattered paleocalcrete nodules"
Environment:"floodplain"
Taphonomy
Modes of preservation:body
Lagerst�tten type:concentrate
Degree of concentration:-single event
Size of fossils:macrofossils
Spatial orientation:preferred
Preservation of anatomical detail:good
Abundance in sediment:common
Articulated whole bodies:some
Associated major elements:some
Disassociated major elements:many
Disassociated minor elements:many
Size sorting:very poor
Fragmentation:occasional
Temporal resolution:snapshot
Spatial resolution:autochthonous
Collection methods and comments
Collection methods:selective quarrying,mechanical,field collection
Rock censused:5400 cm2 (area)
Reason for describing collection:general faunal/floral analysis
Museum repositories:MCZ,UCMP
Collectors:C. L. Camp, R. Arrias, H. Anderson, G. Barrington, & S. P. Welles Collection dates:1928–1933, 1960s, 1999-
Collection method comments: excavated 1928-1933 by C. L. Camp, R. Arrias, H. Anderson, G. Barrington, and S. P. Welles for UCMP; two specimens of Typothorax collected by Harvard in 1930s
Metadata
Database number:47126
Authorizer:M. Carrano, R. Butler Enterer:M. Carrano, R. Butler
Modifier:M. Carrano Research group:vertebrate
Created:2005-02-14 10:10:10 Last modified:2021-11-02 09:24:16
Access level:the public Released:2005-02-14 10:10:10
Creative Commons license:CC BY
Reference information

Primary reference:
12931.ETE R. A. Long, S. G. Lucas, A. P. Hunt and R. T. McCrea. 1989. Charles Camp: collecting Late Triassic vertebrates in the American southwest during the 1920's and 1930's. 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 [M. Carrano/M. Carrano/M. Carrano]

Secondary references:

27981ETE K. D. Angielczyk. 2002. A selective annotation of published Triassic vertebrates from the University of California Museum of Paleontology collection. In A. B. Heckert, S. G. Lucas (eds.), New Mexico Museum of Natural History and Science Bulletin 21:297-301 [M. Carrano/M. Carrano/P. Wagner]
31961 A. B. Heckert, S. G. Lucas, R. M. Sullivan, A. P. Hunt, and J. A. Spielmann. 2005. The vertebrate fauna of the Upper Triassic (Revueltian: early-mid Norian) Painted Desert Member (Petrified Forest Formation: Chinle Group) in the Chama Basin, northern New Mexico. In S. G. Lucas, K. E. Ziegler, V. W. Lueth, & D. E. Owen (eds.), New Mexico Geological Society, 56th Field Conference Guidebook, Geology of the Chama Basin 56:302-318 [R. Butler/R. Butler/M. Carrano]
31964 A. P. Hunt. 1993. Taxonomy of phytosaurs (Reptilia: Archosauria) from the Canjilon Quarry, Petrified Forest Formation, north-central New Mexico. In S. G. Lucas, M. Morales (eds.), The Nonmarine Triassic, New Mexico Museum of Natural History and Science Bulletin 3:G13 [R. Butler/R. Butler/R. Butler]
31963 A. P. Hunt and A. Downs. 2002. Taphonomy of the Late Triassic Canjilon Quarry (Petrified Forest Formation: Chinle Group), north-central New Mexico: data from new excavations. In A. B. Heckert, S. G. Lucas (eds.), Upper Triassic Stratigraphy and Paleontology, New Mexico Museum of Natural History and Science Bulletin 21:291-295 [R. Butler/R. Butler]
31344 A. P. Hunt, A. B. Heckert, S. G. Lucas and A. Downs. 2002. The distribution of the enigmatic reptile Vancleavea in the Upper Triassic Chinle Group of the western United States. In A. B. Heckert, S. G. Lucas (eds.), Upper Triassic Stratigraphy and Paleontology, New Mexico Museum of Natural History and Science Bulletin 21:269-273 [R. Butler/R. Butler]
5928ETE 1709A. 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]
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]
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]
36695ETE S. G. Lucas. 1993. The Upper Triassic Chinle Group, western United States. In S. G. Lucas & M. Morales (ed.), The Nonmarine Triassic. New Mexico Museum of Natural History and Science Bulletin 3:G2-G12 [M. Carrano/M. Carrano]
27232ETE S. G. Lucas, K. E. Ziegler, A. B. Heckert and A. P. Hunt. 2003. Upper Triassic stratigraphy and biostratigraphy, Chama Basin, north-central New Mexico. In K. E. Ziegler, A. B. Heckert, & S. G. Lucas (eds.), Paleontology and Geology of the Upper Triassic (Revueltian) Snyder Quarry, New Mexico. New Mexico Museum of Natural History and Science Bulletin 24:15-39 [M. Carrano/M. Carrano]
29943ETE S. J. Nesbitt and M. R. Stocker. 2008. The vertebrate assemblage of the Late Triassic Canjilon Quarry (northern New Mexico, USA), and the importance of apomorphy-based assemblage comparisons. Journal of Vertebrate Paleontology 28(4):1063-1072 [M. Carrano/M. Carrano]
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]
31962 K. E. Zeigler, S. G. Lucas, and A. B. Heckert. 2002. The Late Triassic Canjilon Quarry (Upper Chinle Group, New Mexico) phytosaur skulls: evidence of sexual dimorphism in phytosaurs. In A. B. Heckert, S. G. Lucas (eds.), Upper Triassic Stratigraphy and Paleontology, New Mexico Museum of Natural History and Science Bulletin 21:179-188 [R. Butler/R. Butler]
12565ETE K. E. Zeigler, S. G. Lucas, and A. B. Heckert. 2003. Variation in the Late Triassic Canjilon quarry (Upper Chinle Group, New Mexico) phytosaur skulls: a case for sexual dimorphism. Paläontologische Zeitschrift 77(2):341-351 [M. Carrano/M. Carrano/J. Alroy]