EC-1, Emigration Canyon, Lead Bell Shale [= Spence Shale] (Cambrian of the United States)

Where: Bear Lake County, Idaho (42.4° N, 111.5° W: paleocoordinates 6.1° S, 89.4° W)

• coordinate based on nearby landmark

When: Glossopleura to Bathyuriscus-Elrathina trilobite zone, Lead Bell Shale Member (Langston Formation), Delamaran (513.0 - 505.0 Ma)

• a small quarry of 2 ft x 8 ft of sandy shale. Lead Bell Shale is lateral equivalent of Spence Shale.

• member-level stratigraphic resolution

Environment/lithology: marine; lithified, sandy shale

Size class: macrofossils

Preservation: mold/impression, recrystallized, original calcite, replaced with calcite

Collected by James Sprinkle in 1967, 1968; reposited in the MCZ, USNM

Collection methods: quarrying, mechanical,

Primary reference: J. Sprinkle. 1973. Morphology and evolution of blastozoan echinoderms. Harvard University Museum of Comparative Zoology, Special Publication 1-283 [G. Webster/G. Webster/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 90621: authorized by Alex Lin, entered by Alex Lin on 11.08.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

 Gogiida - Eocrinidae
Gogia palmeri Sprinkle 1973
Ctenocystoidea indet. Robison and Sprinkle 1969