Where: Box Elder County, Utah (41.6° N, 112.0° W)

• Paleocoordinates: 31.1° N, 129.8° W (Wright 2013)

When: Glossopleura to Bathyuriscus-Elrathina trilobite zone, Spence Shale Member (Langston Formation), Delamaran (511.2 - 506.5 Ma)

Environment/lithology: deep subtidal ramp; lithified mudstone

Size class: macrofossils

Preservation: mold/impression

Collected by James Sprinkle, R. A. Robison in 1968; reposited in the MCZ, USNM

• Also in UU, Department of Geological and Geophysical Sciences, University of Utah.

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 90588: authorized by Alex Lin, entered by Alex Lin on 08.08.2009, edited by John Alroy

Creative Commons license: CC0 (CC0)