Locality 6, Hillyard's Canyon, Zone "F" (Ordovician of the United States)

Where: Franklin County, Idaho (42.1° N, 111.6° W: paleocoordinates 7.3° S, 81.8° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Rossaspis superciliosa trilobite zone, Garden City Formation, Stairsian (485.4 - 478.6 Ma)

• 306 feet above base of formation. Zone F.

Environment/lithology: shallow subtidal; lithology not reported

• Based on description of Garden City Formation from other sections in same reference.

Size classes: macrofossils, mesofossils

Preservation: replaced with silica

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

Collection methods: chemical,

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 103822: 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
Trilobita
  -
Pseudoclelandia fluxafissura n. sp., Pseudoclelandia cornupsittaca n. sp.
Pseudoclelandia fluxafissura n. sp. Ross 1951 trilobite
Pseudoclelandia cornupsittaca n. sp. Ross 1951 trilobite
 Phacopida - Pliomeridae
"Protopliomerops superciliosa n. sp." = Rossaspis superciliosa
"Protopliomerops superciliosa n. sp." = Rossaspis superciliosa Ross 1951 trilobite
 Proetida - Dimeropygidae
Pseudohystricurus obesus n. sp.
Pseudohystricurus obesus n. sp. Ross 1951 trilobite
 Proetida - Telephinidae
Goniophrys prima n. sp., Pyraustocranium orbatum n. sp.
Goniophrys prima n. sp. Ross 1951 trilobite
Pyraustocranium orbatum n. sp. Ross 1951 trilobite
 Proetida - Hystricuridae
Hystricurus contractus n. sp., Hystricurus oculilunatus n. sp., Amblycranium cornutum n. sp., "Hystricurus flectimembrus n. sp." = Flectihystricurus flectimembrus, "Hystricurus acumennasus n. sp." = Flectihystricurus acumennasus, Pachycranium faciclunis n. sp., Hillyardina semicylindrica n. sp., "Hyperbolochilus marginauctum n. sp." = Hillyardina marginauctum, Parahystricurus oculirotundus n. sp., Parahystricurus fraudator n. sp., Parahystricurus pustulosus n. sp.
Hystricurus contractus n. sp. Ross 1951 trilobite
Hystricurus oculilunatus n. sp. Ross 1951 trilobite
Amblycranium cornutum n. sp. Ross 1951 trilobite
"Hystricurus flectimembrus n. sp." = Flectihystricurus flectimembrus Ross 1951 trilobite
"Hystricurus acumennasus n. sp." = Flectihystricurus acumennasus Ross 1951 trilobite
Pachycranium faciclunis n. sp. Ross 1951 trilobite
Hillyardina semicylindrica n. sp. Ross 1951 trilobite
"Hyperbolochilus marginauctum n. sp." = Hillyardina marginauctum Ross 1951 trilobite
Parahystricurus oculirotundus n. sp. Ross 1951 trilobite
Parahystricurus fraudator n. sp. Ross 1951 trilobite
Parahystricurus pustulosus n. sp. Ross 1951 trilobite
 Harpetida - Entomaspididae
Hypothetica rawi n. sp.
Hypothetica rawi n. sp. Ross 1951 trilobite