Locality 5, Hillyard's Canyon, Zone "G(1)" (Ordovician of the United States)

Where: Franklin County, Idaho (42.1° N, 111.6° W: paleocoordinates 7.5° S, 80.8° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Hintzeia celsaora trilobite zone, Garden City Formation, Tulean (485.4 - 471.8 Ma)

• 1 foot interval at 428 feet above base of formation. Zone G1

• group of beds-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified, intraclastic grainstone

• "Ledge of intraformational conglomerate in crystalline matrix"

Size class: macrofossils

Collected by R. J. Ross, Jr. in 1946-1947; reposited in the YPM

Primary reference: R. J. Ross, Jr. 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/M. Hopkins]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 103806: authorized by Melanie Hopkins, entered by Melanie Hopkins on 02.02.2011, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Aulacopleurida - Hystricuridae
? Hystricurus sp. Raymond 1913 trilobite
 Proetida - Bathyuridae
"Benthamaspis obrepta" = Benthamaspis conica
"Benthamaspis obrepta" = Benthamaspis conica Fortey 1979 trilobite