Where: Utah (39.1° N, 113.5° W: paleocoordinates 8.1° S, 78.9° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Zone N trilobite zone, Lehman Formation, Llanvirn (468.0 - 458.4 Ma)

• base of Lehman Formation; Trilobite Zone N, White Rockian (Llanvirn), Middle Ordovician

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified limestone

Primary reference: D. B. Blake and T. E. Guensburg. 1993. New Lower Ordovician stelleroids (Echinodermata) and their bearing on the origins and early history of the stelleroid echinoderms. Journal of Paleontology 67(1):103-113 [L. Villier/L. Villier/L. Villier]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 91173: authorized by Loic Villier, entered by Loic Villier on 08.09.2009

Creative Commons license: CC BY (attribution)