ammonites
meter 42, Ibex (Ordovician of the United States)

Where: Utah (39.2° N, 113.5° W: paleocoordinates 7.7° S, 81.0° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Tripodus laevis conodont zone, Juab Formation, Rangerian (471.8 - 468.1 Ma)

• Paralenorthis-Orthidiella zone

• bed-level stratigraphic resolution

Environment/lithology: lithified, shelly/skeletal limestone and lithified shale

• 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: W. C. Sweet and C. M. Tolbert. 1997. An Ibexian (Lower Ordovician) Reference Section in the Southern Egan Range, Nevada, for a Conodont-Based Chronostratigraphy. United States Geological Survey Professional Paper 1579–B:53-81 [P. Wagner/P. Wagner] more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 37458: authorized by Steven Holland, entered by Steven Holland on 15.03.2004