Cholla Power Plant transformer station footprints: Aegean - Bithynian, Arizona
collected by S. Nesbitt 1998

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia - Chirotheriidae
Chirotherium rex Peabody 1948
Chirotherium barthi (Kaup 1835)
original and current combination Chirotherium barthii
Reptilia
Rhynchosauroides sp. Maidwell 1911
Nesbitt 2005
see common names

Geography
Country:United States State/province:Arizona County:Navajo
Coordinates: 34.9° North, 110.3° West (view map)
Paleocoordinates:3.3° North, 38.9° West
Basis of coordinate:based on nearby landmark
Geographic resolution:local area
Time
Period:Triassic Epoch:Middle Triassic
Stage:Anisian 10 m.y. bin:Triassic 2
Key time interval:Aegean - Bithynian
Age range of interval:247.20000 - 242.00000 m.y. ago
Stratigraphy
Formation:Moenkopi Member:Holbrook
Stratigraphic resolution:group of beds
Stratigraphy comments: probably from the lower Holbrook Member; Lucas & Schoch (2002: Lethaia 35: 97-106) inferred the Holbrook member to be earliest Anisian (Aegean–Bithynian) in age based upon tetrapod biostratigraphy (Eocyclotosaurus used to correlate Holbrook Member to German Upper Bundsandstein) and magnetostratigraphy
Lithology and environment
Primary lithology: sandstone
Includes fossils?Y
Environment:terrestrial indet.
Taphonomy
Modes of preservation:cast,trace
Size of fossils:macrofossils
Spatial orientation:life position
Temporal resolution:snapshot
Spatial resolution:autochthonous
Collection methods and comments
Collection methods:surface (float),surface (in situ),field collection,observed (not collected)
Reason for describing collection:general faunal/floral analysis
Collectors:S. Nesbitt Collection dates:1998
Metadata
Database number:95093
Authorizer:R. Butler Enterer:R. Butler
Modifier:R. Butler Research group:vertebrate
Created:2010-04-06 07:43:19 Last modified:2012-10-25 03:38:47
Access level:the public Released:2010-04-06 07:43:19
Creative Commons license:CC BY
Reference information

Primary reference:

32387. S. Nesbitt. 1999. A Middle Triassic ichnofauna: a preliminary report. Mesa Southwest Museum Bulletin 6:23-33 [R. Butler/R. Butler]

Secondary references:

32399 S. G. Lucas and R. R. Schoch. 2002. Triassic temnospondyl biostratigraphy, biochronology and correlation of the German Bundsandstein and North American Moenkopi Formation. Lethaia 35:97-106 [R. Butler/R. Butler]
32378 S. J. Nesbitt. 2005. The Moenkopi Formation along the Little Colorado River in eastern Arizona. In S. J. Nesbitt, W. G. Parker, R. B. Irmis (eds.), Guidebook to the Triassic Formations of the Colorado Plateau in northern Arizona, Mesa Southwest Museum Bulletin 9:13-23 [R. Butler/R. Butler]