Where: Box Elder County, Utah (41.5° N, 112.0° W: paleocoordinates 5.6° S, 90.2° W)

• outcrop-level geographic resolution

When: Spence Tongue Member (Lead Bell Shale Formation), Delamaran (511.2 - 506.5 Ma)

• member-level stratigraphic resolution

Environment/lithology: offshore; lithified, calcareous shale

Collection methods: Collected by Lloyd and Val Gunther of Brigham City, Utah. Each specimen has 4 to possibly 8 fan-shaped lobes. The specimens are not identified further due to lack of oral appendages and other features.

Primary reference: R. H. Willoughby and R. A. Robison. 1979. Medusoids from the Middle Cambrian of Utah. Journal of Paleontology 53(2):494-500 [M. Patzkowsky/P. Borkow/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 8588: authorized by Mark Patzkowsky, entered by Phil Borkow on 07.08.2000

Creative Commons license: CC BY (attribution)