Where: Rich County, Utah (42.0° N, 111.5° W: paleocoordinates 7.5° S, 81.9° W)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Symphysurina bulbosa trilobite zone, Garden City Formation, Gasconadian (485.4 - 477.7 Ma)
• 16 foot interval starting at 37 feet above base of measured section. Zones A-B is Symphysurina bulbosa in modern usage.
• group of beds-level stratigraphic resolution
Environment/lithology: shallow subtidal; lithified, gray limestone and lithified, yellow, muddy limestone
Size class: macrofossils
Collected by R. J. Ross, Jr. in 1946-1947; reposited in the YPM
Primary reference: R. J., J.r. Ross. 1951. Stratigraphy of the Garden City Formation in northeastern Utah, and its trilobite faunas. Yale Peabody Museum of Natural History Bulletin 6:1-161 [S. Finnegan/S. Finnegan/P. Wagner]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 103786: authorized by Melanie Hopkins, entered by Melanie Hopkins on 02.02.2011
Creative Commons license: CC BY (attribution)
Taxonomic list
Trilobita | |
Clelandia utahensis Ross 1951 trilobite | |
Symphysurina illaenoides trilobite | |
Bellefontia acuminiferentis Ross 1951 trilobite |