Rancho del Rio tracksite (Jurassic of the United States)

Also known as State Bridge, Statebridge

Where: Eagle County, Colorado (39.9° N, 106.6° W: paleocoordinates 35.0° N, 52.4° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Salt Wash Member (Morrison Formation), Kimmeridgian (157.3 - 152.1 Ma)

• at least 6 track-bearing levels near base of formation

• group of beds-level stratigraphic resolution

Environment/lithology: lacustrine; sandstone

Size class: macrofossils

Preservation: trace

Collected by M. Lockley, G. Gierlinski

Collection methods: surface (in situ),

Primary reference: M. G. Lockley. 1986. A Guide to Dinosaur Tracksites of the Colorado Plateau and American Southwest. University of Colorado at Denver Geology Department Magazine, Special Issue 1:1-56 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 156134: authorized by Matthew Carrano, entered by Matthew Carrano on 09.05.2014

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Pterosauria -
? Pterosauria indet.1 Kaup 1834 pterosaur
 Theropoda -
Theropoda indet.2 Marsh 1881 theropod
"probably…a new ichnogenus"
 Saurischia - Parabrontopodidae
Parabrontopodus sp.1 Lockley et al. 1995 sauropod
narrow-gauge tracks