Where: Idaho (44.3° N, 114.4° W: paleocoordinates 4.2° S, 87.3° W)

• coordinate based on nearby landmark

When: Albertella trilobite zone, Bayhorse Red Siltstone Formation, Delamaran (511.2 - 506.5 Ma)

• basal 6ft. of red shaly siltstone above top of Cash Creek Quartzite. PJW: Informal name for a clearly distinct rock unit.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified, muddy siltstone

Size class: macrofossils

Preservation: mold/impression

Collected by Sprinkles and Hobbs in 1968; reposited in the MCZ

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 90589: authorized by Alex Lin, entered by Alex Lin on 08.08.2009

Creative Commons license: CC BY (attribution)