ammonites

Upheaval Dome: Carnian, Utah
collected by K. Kietzke

Where & when
Geology
Taphonomy & methods
Metadata & references
Geography
Country:United States State/province:Utah County:San Juan
Coordinates: 38.4° North, 109.9° West (view map)
Paleocoordinates:12.8° North, 46.5° West
Basis of coordinate:based on nearby landmark
Geographic resolution:small collection
Time
Period:Triassic Epoch:Late/Upper Triassic
Stage:Carnian 10 m.y. bin:Triassic 3
Key time interval:Carnian
Age range of interval:228.0 - 216.5 m.y. ago
Stratigraphy
Geological group:Chinle Formation:Petrified Forest Member:Blue Mesa
Stratigraphy comments: 11.5 m above the base of the Blue Mesa Member. Stagonolepis used to suggest an Adamanian, or late Carnian, age.
Lithology and environment
Primary lithology:paleosol/pedogenic,gray,green,yellow sandy grainstone
Includes fossils?Y
Lithology description: "0.7-m-thick, slightly sandy, very well-indurated pisolitic calcrete to calcarenite. The matrix is grayish yellow-green."
Environment:fluvial indet.
Geology comments: "Fluvial deposit that was subsequently subjected to pedogenic modification"
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Spatial orientation:random
Associated major elements:all
Collection methods and comments
Reason for describing collection:general faunal/floral analysis
Museum repositories:NMMNH
Collectors:K. Kietzke
Metadata
Database number:92321
Authorizer:R. Butler Enterer:R. Butler
Modifier:R. Butler Research group:vertebrate
Created:2009-11-06 06:27:07 Last modified:2009-11-06 06:29:42
Access level:the public Released:2009-11-06 06:27:07
Reference information
Primary reference:
31127 A. B. Heckert, S. G. Lucas, and J. D. Harris. 1999. An aetosaur (Reptilia: Archosauria) from the Upper Triassic Chinle Group, Canyonlands National Park, Utah. National Park Service Paleontological Research 4:23-26 [R. Butler/R. Butler]