Locality 1, Swan Peak and Garden City Canyon, Zone "J" (Ordovician of the United States)

Where: Rich County, Utah (42.0° N, 111.5° W: paleocoordinates 8.1° S, 79.6° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Pseudocybele nasuta trilobite zone, "Upper Cherty" Member (Garden City Formation), Blackhillsian (474.9 - 470.0 Ma)

• Lower 46 feet of Upper Cherty member. Zone J.

• group of beds-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified dolomite and lithified, black chert

• "Coarse crystalline dolomite with 'interbedded' black chert stringers, each in 2-3 inch layers; chert forming 50% of rock. Dolomite gradually grading to limestone in the lower 20 feet". Fossil in upper half.

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 103785: authorized by Melanie Hopkins, entered by Melanie Hopkins on 02.02.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
 Parablastoidea - Blastocystidae
Blastoidocrinus cf. carchariaedens
Rhynchonellata
 Orthida - Finkelnburgiidae
Diparelasma sp.
Diparelasma sp. Ulrich and Cooper 1936
 Orthida - Hesperonomiidae
Hesperonomia sp.
Hesperonomia sp. Ulrich and Cooper 1936
Strophomenata
 Billingsellida - Polytoechiidae
Tritoechia sp.
Tritoechia sp. Ulrich and Cooper 1936
Trilobita
 Phacopida - Cheiruridae
? Parapilekia sp.
? Parapilekia sp. Kobayashi 1934 trilobite