Red Fleet Reservoir tracksite, unit I (Jurassic to of the United States)

Where: Uintah County, Utah (40.6° N, 109.4° W: paleocoordinates 27.6° N, 46.7° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Navajo Sandstone Formation (Glen Canyon Group), Pliensbachian to Pliensbachian (190.8 - 174.1 Ma)

• approx. 80 m below top of formation

•

•Navajo Sandstone forms uppermost part of Glen Canyon Group, and is Early Jurassic, but probably not older than Pliensbachian (Irmis 2005. A review of the vertebrate fauna of the Lower Jurassic Navajo Sandstone in Arizona. Mesa Southwest Museum Bulletin 11:55–71)

• bed-level stratigraphic resolution

Environment/lithology: eolian; brown sandstone and red, calcareous sandstone

• "ephemeral playa lake"
• "layers of sandstone and calcareous sandstone. These are alternating, sometimes very thin layers of pale brown (5YR5/1) and very pale orange (10YR8/2) with the brown tending to be more sandy and the orange more calcareous." Layer contains root casts.

Size class: macrofossils

Preservation: mold/impression, trace

Primary reference: A. H. Hamblin and S. A. Bilbey. 1999. A dinosaur track site in the Navajo-Nugget Sandstone, Red Fleet Reservoir, Uintah County, Utah. In D. D. Gillette (ed.), Vertebrate Paleontology in Utah, Utah Geological Survey Miscellaneous Publication 99-1:51-57 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 49594: authorized by Matthew Carrano, entered by Matthew Carrano on 20.04.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Plantae indet.
Plantae indet. Haeckel 1866
root casts
Reptilia
 Theropoda - Grallatoridae
Eubrontes sp.
Eubrontes sp. Hitchcock 1845 theropod