Annie's Canyon tracksite (Jurassic to of the United States)

Also known as GCNRA

Where: San Juan County, Utah (37.4° N, 110.7° W: paleocoordinates 24.6° N, 48.4° W)

• coordinate estimated from map

• outcrop-level geographic resolution

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

• 2 track-bearing beds

• group of beds-level stratigraphic resolution

Environment/lithology: interdune; carbonate

• "a localized, flat-bedded, playa deposit"
• "The tracks occur at two stratigraphic levels, in a thin carbonate sequence little more than a meter thick. Several of the carbonate units are laminated suggesting an algal origin. The carbonates pass laterally into siliciclastic sediments (sandstones and shales) that in places reveal irregular surfaces, indicative of trampling or bioturbation"

Size class: macrofossils

Preservation: trace

Collected by M. Lockley in 1993

Collection methods: surface (in situ),

Primary reference: M. G. Lockley, A. P. Hunt, C. A. Meyer, E. C. Rainforth, and R. J. Schultz. 1998. A survey of fossil footprint sites at Glen Canyon National Recreation Area (western USA): a case study in documentation of trace fossil resources at a national preserve. Ichnos 5(3):177-211 [M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 222907: authorized by Matthew Carrano, entered by Matthew Carrano on 28.10.2021

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Reptilia
 Saurischia - Otozoidae
Otozoum sp.
Otozoum sp. Hitchcock 1847 prosauropod
 Theropoda - Grallatoridae
Eubrontes sp., Grallator sp.
Eubrontes sp. Hitchcock 1845 theropod
Grallator sp. Hitchcock 1858 theropod