USNM Locality 1v, Barrel Spring Section (Cambrian of the United States)

Where: Esmeralda County, Nevada (37.8° N, 117.8° W: paleocoordinates 1.0° S, 94.8° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Bonnia - Olenellus trilobite zone, Middle Member (Poleta Formation), Dyeran (515.3 - 511.2 Ma)

• formation-level stratigraphic resolution

Environment/lithology: offshore; lithified, green, argillaceous, calcareous shale

• green calcareous shale, arenaceous on top.

Size classes: macrofossils, mesofossils

Preservation: mold/impression

Collected by F. B. Weeks in 1899; reposited in the LACM, TMM, UCMP, USNM

Collection methods: quarrying, surface (float), surface (in situ)

Primary reference: C. D. Walcott. 1912. Cambrian Brachiopoda. United States Geological Survey Monograph 51(1-2) [A. Miller/A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 203345: authorized by Pete Wagner, entered by Pete Wagner on 12.08.2019

Creative Commons license: CC BY (attribution)

Taxonomic list

Archaeocyatha indet.
as "Archæcyathus"
 Helcionellida - Helcionellidae
"Stenotheca cf. rugosa" = Helcionella subrugosa
"Stenotheca cf. rugosa" = Helcionella subrugosa Hall 1847
 Kutorginida - Kutorginidae
Kutorgina cingulata Billings 1861
Kutorgina perugata n. sp. Walcott 1905
 Naukatida - Naukatidae
Swantonia sp. Walcott 1905
Swantonia weeksi n. sp. Walcott 1905
 Paterinida - Paterinidae
"Micromitra (Paterina) labradorica" = Paterina
"Micromitra (Paterina) labradorica" = Paterina
 Lingulida - Acrothelidae
"? Siphonotreta dubia n. sp." = Spinulothele dubia
"? Siphonotreta dubia n. sp." = Spinulothele dubia Walcott 1912
 Cambridioida - Cambridiidae
"Stenotheca cf. elongata" = Stenothecoides elongata
"Stenotheca cf. elongata" = Stenothecoides elongata Walcott 1884
 Redlichiida - Holmiidae
"Olenellus argentus" = Grandinasus argentus
"Olenellus argentus" = Grandinasus argentus Walcott 1910 trilobite
 Redlichiida -
"Wanneria gracile" = Nevadia gracile
"Wanneria gracile" = Nevadia gracile Walcott 1910 trilobite
 Ptychopariida - Ptychopariidae
Ptychoparia sp. Corda 1847 trilobite