Where: Utah (39.4° N, 113.3° W: paleocoordinates 4.3° S, 91.5° W)

• coordinate based on nearby landmark

When: Bolaspidella trilobite zone, Wheeler Formation, Marjumian (504.5 - 497.0 Ma)

• top 100 ft. of the Wheeler Shale

• group of beds-level stratigraphic resolution

Environment/lithology: deep subtidal ramp; lithified mudstone

Size class: macrofossils

Preservation: mold/impression

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

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 90586: authorized by Alex Lin, entered by Alex Lin on 08.08.2009

Creative Commons license: CC BY (attribution)