Pogonip Group, meter 31, Zone 11, Steptoe, Nevada (Ordovician of the United States)
Where: Nevada (40.8° N, 115.1° W: paleocoordinates 6.4° S, 78.3° W)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Pogonip Group, Whiterockian (471.8 - 457.5 Ma)
• bed-level stratigraphic resolution
Environment/lithology: lithified, shelly/skeletal limestone
• cyclical alternations of massive limestones with interbedded recessive thin-bedded limestones and shales
Size class: macrofossils
Reposited in the USNM
Collection methods: bulk, mechanical,
Primary reference: R. A. Fortey and M.L. Droser. 1996. Trilobites at the base of the Middle Ordovician, western United States. Journal of Paleontology 70(1):73-991 [S. Holland/S. Holland/S. Holland] more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 37484: authorized by Steven Holland, entered by Steven Holland on 15.03.2004