Warm Springs Ranch tracksite, unit 1 (Jurassic to of the United States)

Where: Hot Springs County, Wyoming (43.6° N, 108.2° W: paleocoordinates 39.5° N, 53.7° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Morrison Formation, Kimmeridgian to Kimmeridgian (157.3 - 145.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: fluvial-lacustrine; gray, calcareous mudstone and burrowed, paleosol/pedogenic, gray, green mudstone

• "a palustrine-lacustrine setting"
• "interbedded light gray carbonate mudstone and greenish gray mudstone. Carbonate mudstones contain sparse silts grains, bioclasts, and ostracodes in a clay-rich, micritic matrix...Greenish gray mudstone has large, micrite-filled dessication cracks, > 0.5 mm-diamter rhizoliths, > 1mm diameter burrows, and pedogenic carbonate nodules."

Size class: macrofossils

Preservation: mold/impression, trace

Collection methods: surface (in situ),

Primary reference: D. S. Jennings, B. F. Platt, and S. T. Hasiotis. 2006. Distribution of vertebrate trace fossils, Upper Jurassic Morrison Formation, Bighorn Basin, Wyoming, USA: implications for differentiating paleoecological and preservational bias. In J. R. Foster & S. G. Lucas (ed.), Paleontology and Geology of the Upper Jurassic Morrison Formation. New Mexico Museum of Natural History and Science Bulletin 36:183-192 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taphonomic analysis

PaleoDB collection 192707: authorized by Matthew Carrano, entered by Matthew Carrano on 16.04.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

 Saurischia -
Sauropoda indet. Marsh 1878 sauropod
type 9 tracks
 Saurischia - Camarasauridae
Camarasaurus sp. Cope 1877 camarasaurid
 Saurischia -
Theropoda indet. Marsh 1881 theropod
shed teeth
 Avetheropoda - Allosauridae
? Allosaurus sp. Marsh 1877 allosaurid
type 7 tracks